My gauges and turn signals will blink out and come back to life randomly

First thing to do is have the computer checked for trouble codes. The blinking D4 light means overdrive is not going to function, probably because of the rough running engine.

I doubt it is the flasher since it handles both sides. A more likely cause is a faulty bulb socket or wiring problem.

Could have connection issues at the BCM - body control module , lose ground . The BCM controls all the thing's your have problems with .
Turn Signal Lamps
When the turn signal switch is place in either the right or left turn position, the turn/hazard request circuit is pulled low, through a resistor. The body control module (BCM) uses the resistors to determine if the left or right turn signals have been requested. The BCM then supplies an ON-OFF voltage to the turn signal lamps and turn signal indicator on the selected side of the vehicle. The turn signals receive a ground at G101, G401, or G403.

When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.

Engine Coolant Indicator(s)
LOW COOLANT LEVEL
The IPC illuminates the low coolant warning indicator when any of the following occur:
• The BCM detects a low coolant level condition for at least 30 seconds. The IPC receives a class 2 message from the BCM requesting illumination.
• The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds .

The thing to do first would be to hook up a factory or professional type scan tool an check for Instrument cluster or BCM DTC'S - diagnostic trouble codes . Then checking connection 's at the BCM , testing power an grounds .


ECM Inputs and Outputs Diagnosis

Open Circuit Detection Wiring Diagram 1

turn the bike on and fuel comes out of a line behind the air filter. Can you tell me where that line is supposed to go

take a look at the dash ground wire located next to the right of ebrake release handle. if the bole holding the ground wire is loose, which was quite common it will cause all kinds of feed back problems, like described in the comments section to your question.

Though I can't recall what the wire colors are for your bike's turn signals, here's how to figure it out: on the turn signals that you bought, first determine which wire is the ground by removing the light bulb and then checking to see which wire has continuity to the turn signal's metal bulb socket base.
Then find out which wire is the running light and which is the turn signal by hooking the ground wire and one of the other wires to a 12 volt power source. Which ever wire makes the brighter part of the bulb light up is the turn signal - the dimmer one is for the running light.
On the bike, match the turn signal wire to the bike's wiring that is 'hot' with the turn signal switch on. Plug the running light wire from the turn signal into the bike's wiring that is 'hot' whever the key is on. Hook the turn signal ground wire to the bike's ground wire(s).

1. Turn the ignition switch to the ON (II) position.
2. Press the Select/Reset knob repeatedly until the engine oil life is displayed.
3. Press the Select/Reset knob for about 10 seconds. The information display shows the reset mode initial display as shown.
1. Select the "OIL LIFE" indicator by turning the Select/Reset knob. The display begins to blink. Push the same knob to enter this setting.
2. The engine oil life and the maintenance item code(s) will begin to blink. Push the Select/Reset knob to reset.
3. The maintenance item code(s) will disappear, and the engine oil life will reset to "100".

hey
please follow this step

try to check that wether the router is away from radio ,from your computer,microwave oven.

because these device try to intreupt in the signals

or else try to increase increase the channel in your router page

likely not, but change /check anyhow....If problem persists, likely you will need to change the module that controls directionals (usually under dash to the right of steering column)

sounds like the engine management fault code signal. there is a free download service manual here. with it you should be able to decifer it http://www.carlsalter.com/motorcycle-manuals.asp