Radio and interior lights will not work. Instrument cluster displays NO FUSE!! All fuses are good ( checked with multi meter) I'm puzzled as well as the Jeep service manager. _Dave

Interior Lights Dimming Circuit Description
VF Displays
When the ignition switch is in the RUN position, the instrument cluster activates its VF display. The instrument cluster also coordinates the display illumination for the radio (IRC), the cellular telephone (PHN), and the climate control Panel (CCP) anytime the ignition switch is in the RUN position.
Incandescent Dimming 1 (INC DIM 1)
The INC DIM 1 consists of lamps powered by CKT 8 (GRY). These are referred to as the park lamp backlighting because they are only active if the park lamps are on and the ambient light sensor indicates darkness.
Incandescent Dimming 2 (INC DIM 2)
The INC DIM 2 output is used as a general interior light source and an illuminated entry feature that provides interior lighting. The INC DIM 2 consists of lamps powered by CKT 1244 (BRN). When one or more of the following conditions occur, the INC DIM 2 lamps will be active:
• The interior lamps switch is active.
• The park lamps are on and the ambient light sensor indicates darkness
• The ignition switch is in the RUN position and the ambient light sensor indicates darkness
• A Class 2 message is received from the body control module (PZM) indicating that the courtesy lamps are active.
Dimming
The instrument cluster controls all of the interior dimming functions. The instrument cluster receives an ambient light level input from the ambient light sensor and determines whether it is light or dark. If the ambient light sensor is inoperative, the instrument cluster will assume a condition of darkness. Dimming of the VF displays is only allowed when the ignition switch is in the RUN position, the park lamps are on, and the ambient light sensor indicates darkness. If all conditions for the VF dimming are met, the instrument cluster uses the input from the potentiometer in the headlamp switch to determine the level of dimming. The dimming level is sent to the radio (IRC), the cellular telephone (PHN), and the climate control panel (CCP) via a Class 2 message. These modules then adjust the dimming level of their VF display. The instrument cluster provides dimming control of the incandescent lighting through the INC DIM 1 and INC DIM 2 outputs. The instrument cluster provides dimming control of the electronic PRNDL LED through CKT 1382 (PPL/WHT). The dimming level will very based on the potentiometer in the headlamp switch whenever the parklamps are on and the ambient light sensor indicates darkness, regardless of the position of the ignition switch.


1998 Cadillac DeVille ' DeVille, Eldorado (VIN E/K) Service Manual ' Body and Accessories ' Lighting Systems ' Diagnostic Information and Procedures ' Document ID: 489166
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Interior Lights Dimming System Check
Step
Action
Normal Result(s)
Abnormal Result(s)*
1
Turn the ignition switch to the OFF position.
Place the interior lamps switch in the ON position.
All incandescent lighting on the INC DIM D2 output turns ON. INC DIM 2 includes all of the lighting on CKT 1244 (BRN), which is the backlighting for the headlamp switch and the floodlighting for the vehicle doors.
Incandescent Lamps Inoperative
2
Place the interior lamps switch in the OFF position.
Turn the ignition switch to the RUN position.
INC DIM 2 lighting turns OFF.
All of the VF displays light. VF displays include the following components (if equipped):
• The radio (IRC)
• The cellular telephone (PHN)
• The driver information center (DIC)
• The instrument cluster (IPC)
• The climate control panel (CCP)
• Vacuum Fluorescent Displays Inoperative - All
• Incandescent Lamps Always On
3
Cover the ambient light sensor with the twilight OFF.
Place the headlamp switch in the PARK position.
The park lamps turn ON.
All of the VF displays dim in order to match the current dimming control level. All of the incandescent lighting for INC DIM 1 and INC DIM 2 light at the current dimming control level. INC DIM 1 includes all of the park lamp backlighting on CKT 8 (GRY) which is composed of the following components:
• The radio (IRC)
• The front cigar lighter
• The steering wheel controls
• The driver information center (DIC)
• The climate control panel (CCP)
• The instrument cluster (IPC)
• The heated seat switches
• The auxiliary blower switches
• The ash tray lamps
• The PRNDL lamp
Exterior Lights System Check
4
Rotate the headlamp switch dimming control in both directions.
All of the VF displays and all of the incandescent lighting dim and brighten in response to the headlamp switch dimming control.
Vacuum Fluorescent Displays Do Not Dim with Instrument Panel Dimmer Switch
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.

Fuse 4 does the cigarette light and the side mirrors. Do the mirrors work?
4 15A Cigarette lighter and control system for side mirrors


Fuse 6 does tail lights
6 15A Stop lights
Fuse 14 does the Dash Lights
14 10A Interior lighting and luggage. compartments, clock, radio or radio tape recorder, instrument cluster, central door lock control unit, engine control unit, automatic transmission control unit
If all those fuses are okay, you need a good auto-electrician.

https://fuseandrelay.com/mitsubishi/mirage.html

..

check ACC. fuse

Fuses are listed here
* = maxi fuse
1*=50A I/P fuse panel
2*=40A blower motor relay
3*= 50A 4 wheel ABS module
4*=20a Main light switch-Instrument cluster
5*=50A Ignition switch, starter relay
6*=20A Transfer case relay
7*= NOT USED
8*=20A Auto Ride Control Switch/on off switch
9*=40A Auto Ride Control relay
10*=30A PCM power relay
mini fuses
1=10A A/C relay
2=20A Aux power point
3= not used
4=15A Fog lamps-Daytime lamps
5=10A Air Bag diagnostic monitor
6=10A Powertrain Control Module (PCM)
7=30A 4WABS module
8=30A PCM relay
9=20A Fuel Pump relay and RAP module
10= 15A Horn relay
11=15A Park Lamp relay-Main Light Switch
12=30A Main light switch--Multi Function switch
13=15A Heated O2 sensors, EGR Vacuum Regulator, EVR solenoid,Camshaft position (CMP) Sensor,
Cannister Vent Solenoid, A4LD Auto Transmission
14=30A Generator-Voltage regulator
Interior fuse panel (mini fuses)
1=7.5A Power mirror switch
2=7.5A Blower motor relay,PAD module,Air Bag diagnostic monitor
3=7.5A Trailer tow connector
4=10A Left headlamp
5=10A Data link connector (DLC)
6=7.5A Air bag diagnostic monitor, Blower motor relay, Passive deactivation Module (PAD)
7=7.5A Trailer Tow connector
8=10A Right headlamp, Daytime running lamps (DRL) module, Foglight relay
9=7.5A Stop Lamp switch
10= 7.5A Speed control-amplifier assembly,Brake pressure switch, Generic electronoc Module (GEM)
Shift lock actuator, Blend door actuator, Main light switch, RABS resistor, A/C heater assembly
Flasher
11= 7.5A Instrument cluster, Main light switch, RABS resistor
12= 10A Power window relay, Washer pump relay
13= 20A Stop lamp switch, Brake pressure switch
14= 20A Rear Anti Lock Brake system (RABS) module
**10A 4WABS module**
15=7.5A Instrument cluster
16= 30A Windshield wiper Motor, Wiper Hi-lo relay, wiper run/park relay
17=7.5A Cig lighter
18=15A Drivers unlock relay-All unlock relay
19=25A PCM power diode
20=7.5A RAP module GEM module, Radio
21=15A Flasher (hazard)
22=20A Aux power socket
23=15A Turn signals
24===not used
25= 7.5A GEM module, Instrument cluster
26= 10A Battery saver relay, Electronic Shift relay, Interior lamp relay
Power window relay,Electronic shift control module, transmission control
27=15A Switch,DRL, Backup lamp switch, DTR sensor,Instrument illumination dimming control module
Dome/map lamp, GEM,electronic shift,Interior lights,Glove box lamp and switch
28=7.5A GEM module-Radio
29= 15A Radio
30=15A Park lamps, trailer Tow relay
31===not used
32=10A rear blower
33=15A Headlamps, DRL module, Instrument cluster
34=7.5A Rear integrated control panel, CD
35=10A RABS test connector
36=7.5A CD, rear integrated control panel, memory seat,

i copied this off another post hope this helps

Could be a bad wire possibly chaffing or grounding out to to another wire or frame. Check your fuses. You may want to pull the dash out and check that wiring as well

Fuses: Fuse arrangement in fuse panel, behind instrument cluster, left
Fuse Arrangement In Fuse Panel

1 - Heated washer jets 5A 2 - Turn signals 10A 3 - Headlight washer (relay), illumination for glove
compartment, climate control, Automatic Transmission, instrument cluster 5A 4 - License plate light 5A 5 - Instrument cluster, seat heating, test connection
for cruise control, bulb monitor for auto-check display, Automatic Transmission display, switch
lighting, mirror switches and actuators, airbag
warning light, outside temperature indicator,
climate control 10A 6 - Central locking system 5A 7 - Anti-lock brake system (ABS) 10A 8 - Vacant 9 - Mirror heating 10A 10 - Vacant 11 - Cruise control (Automatic Transmission) 5A 12 - On board diagnostic system 10A 13 - Brake lights 10A 14 - Interior lights, reading lights, anti-theft alarm system, vanity mirror 10A 15 - Instrument cluster, power windows, climate control, automatic transmission 10A 16 - Anti-lock brake system (ABS), Anti-Slip Regulation (ASR) 5A 17 - Heated door locks 10A 18 - High-beam, right 10A 19 - High-beam, left 10A 20 - Low-beam, right 15A 21 - Low-beam, left 15A 22 - Side marker and tail light, right 5A 23 - Side marker and tail light, left 5A 24 - Wiper and washer system 25A 25 - Blower for heating, climate control 30A 26 - Rear window defogger, mirror heating 30A 27 - Rear window wiper 15A 28 - Fuel Pump 15A 29 - Engine timing 30A 30 - Sun roof 20A 31 - Tail lights, cruise control, automatic transmission 15A 32 - Engine timing 20A 33 - Cigarette lighter 15A 34 - Engine timing 15A 35 - Trailer recptacle 30A 36 - Fog lights 15A 37 - Radio 20A 38 - Luggage compartment light, central locking system 15A 39 - Emergency flasher system 15A 40 - Horn 25A 41 - Anti-lock brake system (ABS) 25A 42 - Vacant 43 - Vacant

Fuses are listed here

* = maxi fuse

1*=50A I/P fuse panel
2*=40A blower motor relay
3*= 50A 4 wheel ABS module
4*=20a Main light switch-Instrument cluster
5*=50A Ignition switch, starter relay

6*=20A Transfer case relay
7*= NOT USED
8*=20A Auto Ride Control Switch/on off switch
9*=40A Auto Ride Control relay
10*=30A PCM power relay

mini fuses
1=10A A/C relay
2=20A Aux power point
3= not used
4=15A Fog lamps-Daytime lamps
5=10A Air Bag diagnostic monitor
6=10A Powertrain Control Module (PCM)
7=30A 4WABS module
8=30A PCM relay
9=20A Fuel Pump relay and RAP module
10= 15A Horn relay
11=15A Park Lamp relay-Main Light Switch
12=30A Main light switch--Multi Function switch
13=15A Heated O2 sensors, EGR Vacuum Regulator, EVR solenoid,Camshaft position (CMP) Sensor,
Cannister Vent Solenoid, A4LD Auto Transmission
14=30A Generator-Voltage regulator


Interior fuse panel (mini fuses)

1=7.5A Power mirror switch
2=7.5A Blower motor relay,PAD module,Air Bag diagnostic monitor
3=7.5A Trailer tow connector
4=10A Left headlamp
5=10A Data link connector (DLC)
6=7.5A Air bag diagnostic monitor, Blower motor relay, Passive deactivation Module (PAD)
7=7.5A Trailer Tow connector
8=10A Right headlamp, Daytime running lamps (DRL) module, Foglight relay
9=7.5A Stop Lamp switch
10= 7.5A Speed control-amplifier assembly,Brake pressure switch, Generic electronoc Module (GEM)
Shift lock actuator, Blend door actuator, Main light switch, RABS resistor, A/C heater assembly
Flasher
11= 7.5A Instrument cluster, Main light switch, RABS resistor
12= 10A Power window relay, Washer pump relay
13= 20A Stop lamp switch, Brake pressure switch
14= 20A Rear Anti Lock Brake system (RABS) module
**10A 4WABS module**

15=7.5A Instrument cluster
16= 30A Windshield wiper Motor, Wiper Hi-lo relay, wiper run/park relay
17=7.5A Cig lighter
18=15A Drivers unlock relay-All unlock relay
19=25A PCM power diode
20=7.5A RAP module GEM module, Radio
21=15A Flasher (hazard)
22=20A Aux power socket
23=15A Turn signals
24===not used
25= 7.5A GEM module, Instrument cluster
26= 10A Battery saver relay, Electronic Shift relay, Interior lamp relay
Power window relay,Electronic shift control module, transmission control
27=15A Switch,DRL, Backup lamp switch, DTR sensor,Instrument illumination dimming control module
Dome/map lamp, GEM,electronic shift,Interior lights,Glove box lamp and switch
28=7.5A GEM module-Radio
29= 15A Radio
30=15A Park lamps, trailer Tow relay
31===not used
32=10A rear blower
33=15A Headlamps, DRL module, Instrument cluster
34=7.5A Rear integrated control panel, CD
35=10A RABS test connector
36=7.5A CD, rear integrated control panel, memory seat, Message center Attached images __________________

I believe that this is what you are looking for.....
Fuse and relay locations--2nd generation power distribution box Layout- I think this is a good sticky candidate--



Fuses are listed here

* = maxi fuse

1*=50A I/P fuse panel
2*=40A blower motor relay
3*= 50A 4 wheel ABS module
4*=20a Main light switch-Instrument cluster
5*=50A Ignition switch, starter relay

6*=20A Transfer case relay
7*= NOT USED
8*=20A Auto Ride Control Switch/on off switch
9*=40A Auto Ride Control relay
10*=30A PCM power relay

mini fuses
1=10A A/C relay
2=20A Aux power point
3= not used
4=15A Fog lamps-Daytime lamps
5=10A Air Bag diagnostic monitor
6=10A Powertrain Control Module (PCM)
7=30A 4WABS module
8=30A PCM relay
9=20A Fuel Pump relay and RAP module
10= 15A Horn relay
11=15A Park Lamp relay-Main Light Switch
12=30A Main light switch--Multi Function switch
13=15A Heated O2 sensors, EGR Vacuum Regulator, EVR solenoid,Camshaft position (CMP) Sensor,
Cannister Vent Solenoid, A4LD Auto Transmission
14=30A Generator-Voltage regulator


Interior fuse panel (mini fuses)

1=7.5A Power mirror switch
2=7.5A Blower motor relay,PAD module,Air Bag diagnostic monitor
3=7.5A Trailer tow connector
4=10A Left headlamp
5=10A Data link connector (DLC)
6=7.5A Air bag diagnostic monitor, Blower motor relay, Passive deactivation Module (PAD)
7=7.5A Trailer Tow connector
8=10A Right headlamp, Daytime running lamps (DRL) module, Foglight relay
9=7.5A Stop Lamp switch
10= 7.5A Speed control-amplifier assembly,Brake pressure switch, Generic electronoc Module (GEM)
Shift lock actuator, Blend door actuator, Main light switch, RABS resistor, A/C heater assembly
Flasher
11= 7.5A Instrument cluster, Main light switch, RABS resistor
12= 10A Power window relay, Washer pump relay
13= 20A Stop lamp switch, Brake pressure switch
14= 20A Rear Anti Lock Brake system (RABS) module
**10A 4WABS module**

15=7.5A Instrument cluster
16= 30A Windshield wiper Motor, Wiper Hi-lo relay, wiper run/park relay
17=7.5A Cig lighter
18=15A Drivers unlock relay-All unlock relay
19=25A PCM power diode
20=7.5A RAP module GEM module, Radio
21=15A Flasher (hazard)
22=20A Aux power socket
23=15A Turn signals
24===not used
25= 7.5A GEM module, Instrument cluster
26= 10A Battery saver relay, Electronic Shift relay, Interior lamp relay
Power window relay,Electronic shift control module, transmission control
27=15A Switch,DRL, Backup lamp switch, DTR sensor,Instrument illumination dimming control module
Dome/map lamp, GEM,electronic shift,Interior lights,Glove box lamp and switch
28=7.5A GEM module-Radio
29= 15A Radio
30=15A Park lamps, trailer Tow relay
31===not used
32=10A rear blower
33=15A Headlamps, DRL module, Instrument cluster
34=7.5A Rear integrated control panel, CD
35=10A RABS test connector
36=7.5A CD, rear integrated control panel, memory seat, Message center Attached images __________________

your owner manual sould have fuse chart. Some fuses/ekays in enine compartment. Some in car on left side of instrument panel

in car


Fuse Amps Circuits Protected 1 10 Power Mirrors, Anti-Theft Warning Light, Diagnostic Connector 2 5 Generic Electronic Module, Start Interrupt Relay Coil 3 5 Radio Illumination, Remote Radio Illumination, Electronic Instrument Cluster, Electronic Instrument Cluster PRNDL Illumination, Electronic Instrument Cluster Switch Module, Analog Cluster Illumination, Instrument Illumination 4 — Not Used 5 — Not Used 6 15 Rear Quarter Windows (LH and RH) 7 15 High Mounted Stoplamp, Brake Shift Interlock 8 25 Subwoofer, JBL Amplifier 9 10 Park and Turn Lamps, Side Marker Lamps, License Lamps, Stop Lamps 10 2 High Beam Indicator Electronic Cluster 11 15 Park Lamps 12 10 Remote Radio, Auxiliary Warning Lamp Module, Remote Keyless Entry (RKE) Module, Anti-Theft Controller Module, Radio Illumination 13 15 Radio, CD Disc Changer 14 5 Electronic Chromatic Mirror, Analog Cluster Indicator Lamps, Air Bag Module 15 — Not Used 16 15 Horns, Horn Relay Coil 17 15 Fog Lamps 18 25 Front Wiper Motor, Front Washer Pump, Wiper/Washer Relays 19 10 Generic Electronic Module (Pin 57), Electronic Instrument Cluster 20 25 Integrated Relay Control Module, Ignition Coil 21 10 Air Bag Module, Rear Window Defrost Relay, A/C Clutch, Temp Blend Door Actuator, Brake Shift Interlock 22 20 Rear Cigar Lighter, Power Plug 23 15 Multi-Function Switch 24 20 Rear Wiper Motor, Rear Washer Pump 25 10 Turn Signal Lamps, Instrument Cluster Turn Indicator 26 15 LH Aero Headlamp, Left and Right Trailer Stop/Turn/Hazard 27 15 Hazard Warning Lamps, Instrument Cluster Turn Indicator 28 15 Instrument Panel Cigar Lighter 29 15 Battery Saver Relay, Interior Lamp Control Relay, Interior Lamps, RH and LH Keyhole Lamps 30 25 Backup Lamps, Electronic Cluster 31 10 Rear Air Suspension 32 15 RH Aero Headlamp, Trailer Park Lamps 33 15 Anti-Lock Brake (ABS) Relay, Anti-Lock Brake (ABS) Module, Daytime Running Lamp (DRL) Module 34 30 One Touch Relay, LH Window Motor 35 15 Anti-Theft Controller Module 36 30 A/C Mode Switch 37 20 Door Lock Actuators, Memory Door Lock Relay 38 15 Heated Mirrors (LH and RH) 39 30 Auxiliary Blower Motor, Ref. Valve Solenoid 40 30 Window Motor (RH) 41 5 Autolamp Relay Coils, Autolamp Sensor 42 — — 43 — — 44 — —

it should be number 42


MKIV FUSE LIST
1. Washer nozzle heaters, glove compartment light, memory seat control module (10A).
2. Turn signal lights (10A).
3. Fog light relay, instrument panel light dimmer switch (5A).
4. License plate light (5A).
5. Comfort system, cruise control, Climatronic, A/C, heated seat control modules, automatic day/night interior mirror, control module for multi-function steering wheel, control unit in steering wheel (7.5A).
6. Central locking system (5A).
7. Back-up lights, speedometer vehicle speed sensor (VSS) (10A).
8. Open
9. Anti-lock brake system (ABS) (5A).
10. Engine control module (ECM): gasoline engine (10A); diesel engine, Model Year 2000 > (5A).
11. Instrument cluster, shift lock solenoid (5A).
12. Data Link Connector (DLC) power supply (7.5A).
13. Brake tail lights (10A).
14. Interior lights, central locking system (10A).
15. Instrument cluster, transmission control module (TCM) (5A).
16. A/C clutch, after-run coolant pump (10A).
17. Open.
18. Headlight high beam, right (10A).
19. Headlight high beam, left (10A).
20. Headlight low beam, right (15A).
21. Headlight low beam, left (15A).
22. Parking lights right, side marker right (5A).
23. Parking lights left, side marker left (5A).
24. Windshield and rear window washer pump, windshield wiper motor (20A).
25. Fresh air blower, Climatronic, A/C (25A).
26. Rear window defogger (25A).
27. Motor for rear windshield wiper (15A).
28. Fuel pump (FP) (15A).
29. Engine control module (ECM) gasoline engine (15A); diesel engine (10A).
30. Power sunroof control module (20A).
31. Transmission control module (TCM) (20A).
32. Injectors: gasoline engine (10A); diesel engine (15A).
33. Headlight washer system (20A).
34. Engine control elements (10A).
35. 12 V power outlet (in luggage compartment) (30A).
36. Fog lights (15A).
37. Terminal (86S) on radio, Instrument cluster (10A).
38. Central locking system (with power windows), luggage compartment light, remote/fuel tank door, motor to unlock rear lid (15A).
39. Emergency flashers (15A).
40. Dual tone horn (20A).
41. Cigarette lighter (15A).
42. Radio (25A).
43. Engine control elements (10A).
44. Heated seats (15A).
Fuse arangements in fuse bracket/battery:
S162. Glow plugs (coolant) (50A).
S163. Fuel pump (FP) relay/glow plug relay (50A).
S164. Coolant fan control (FC) control module/coolant fan (40A).
S176. Relays panel interior (110A).
S177. Generator (GEN) (90 Amp.) (110A).
Generator (GEN) (120 Amp.) (150A).
S178. ABS (hydraulic pump) (30A).
S179. ABS (30A).
S180. Coolant fan (30A).