Where can i get a wiring diagram to install a remote starter, and what do I need to bypass the factory security system?

PART COLOR LOCATION 12 VOLT CONSTANT RED (+) @ IGNITION SWITCH HARNESS STARTER YELLOW (+) @ IGNITION SWITCH HARNESS STARTER 2 N/A IGNITION 1 PINK (+) @ IGNITION SWITCH HARNESS IGNITION 2 WHITE (+), See NOTE #6 @ IGNITION SWITCH HARNESS IGNITION 3 N/A ACCESSORY/HEATER BLOWER 1 ORANGE (+) @ IGNITION SWITCH HARNESS ACCESSORY/HEATER BLOWER 2 N/A KEYSENSE LIGHT GREEN (-) @ IGNITION SWITCH HARNESS PARKING LIGHTS ( - ) WHITE (-) @ BCM, LIGHT BLUE plug, Pin A5, See NOTE #4 PARKING LIGHTS ( + ) BROWN (+) @ BCM, LIGHT BLUE Plug, Pin B6, See NOTE #4 POWER LOCK LIGHT BLUE (TYPE A) @ BCM, BROWN plug, Pin A4, See NOTE #4 POWER UNLOCK WHITE (TYPE A) @ BCM, BROWN Plug, Pin A3, See NOTE #4 DOOR TRIGGER See NOTE #2 @ BCM, See NOTE #4 DOMELIGHT SUPERVISION TAN (-) @ BCM, PURPLE Plug, Pin B4, See NOTE #4 TRUNK RELEASE N/A SLIDING POWER DOOR N/A HORN BLACK (-) @ STEERING COLUMN HARNESS TACH WHITE (AC) @ ECM, See NOTE *2 WAIT TO START LIGHT DARK BLUE (-), See NOTE #5 @ INSTRUMENT CLUSTER BRAKE WHITE (+) @ SWITCH ABOVE BRAKE PEDAL FACTORY ALARM DISARM LIGHT GREEN (-) @ BCM, PURPLE plug, Pin B3, See NOTE #4 ANTI-THEFT YELLOW (+), ORANGE/BLACK (-) and RED/WHITE (Not used) GM's PASSLOCK 2 System, these wires exit the Ignition Switch Tumbler together and are in the Main Ignition Switch Harness in the Column. EXTRA INFORMATION NOTE #1: This vehicle is equipped with the PASSLOCK 2 ANTI-THEFT SYSTEM and will require a 791 Bypass Module for Remote Starting, to order go to the SECURITY BYPASS MODULE Page on this website. NOTE #2: This vehicle has 2 door trigger wires, the DRIVERS DOOR is a TAN (-) PURPLE plug, B4 and ALL OTHER doors BLUE/WHITE (-) LIGHT BLUE plug, Pin B11 at the BCM use both Door Trigger wires and DIODE ISOLATE when connecting to an ALARM SYSTEM, to connect, See DIAGRAM. NOTE #3; The ECM (Engine Control Module) is located near the battery, down low, between the fender and the fan, under a BLACK plastic cover. On the 4.3L engine it is in a 20 pin connector labled RED. On the 4.8L, 5.3L and 6.0L engines it is located at Pin 10 in the RED connector NOTE #4: The BCM (Body Control Module) is located behind the drivers side of dash, with the plugs facing the rear of the vehicle. NOTE #5: when hooking up a remote starter, if you cannot get the (+) or (-) Wait to Start wire on the Remote Starter to work properly, you will then need to disconnect this wire and Program the Remote Starter for the 5, 10, 15 or 20 Second Wait to Start Timmer in the Installation manual. NOTE #6: IMPORTANT !!!!! this wire MUST BE CONNECTED as IGNITION #2 for REMOTE STARTING!!!!!!

here it is , 1993 but most books were never ever fully digitized.
sorry,, that be hard work. (weeks even)

https://eautorepair.net/Marketing/Default.asp

or park on ebay for a year finding any pre 2000 paper only service manual books made back then.
buy the book, even google the earth for it.
500pages of bound books, and back then, the love suppliants.
that's right, separate books for engine, trannny, wiring, or IMMO

Download manual from the attached link: https://www.gmupfitter.com/publicat/2004_BB/2003_Beyond_LD_Electric_CK.pdf
http://alarmsellout.com/support/diagrams/vehicle/CHEVROLET%20SILVERADO%201988-2005.pdf

This may help:
http://www.automotivetroubleshootingsecrets.com/2003_Chevrolet_Silverado_1500_4.8L_No_Start_Stall.html

This may help:
2003-2006 Chevrolet Silverado Wiring Diagram:
Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2003-2006 Chevrolet Silverado . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections.

PART COLOR LOCATION 12 VOLT CONSTANT RED (+) @ IGNITION SWITCH HARNESS STARTER YELLOW (+) @ IGNITION SWITCH HARNESS STARTER 2 N/A IGNITION 1 PINK (+) @ IGNITION SWITCH HARNESS IGNITION 2 WHITE (+), SEE NOTE #2 @ IGNITION SWITCH HARNESS IGNITION 3 N/A ACCESSORY/HEATER BLOWER 1 ORANGE (+) @ IGNITION SWITCH HARNESS ACCESSORY/HEATER BLOWER 2 BROWN (+) @ IGNITION SWITCH HARNESS KEYSENSE N/A PARKING LIGHTS ( - ) GRAY/BLACK (-) @ BCM, BROWN PLUG, PIN B2, SEE NOTE #3 PARKING LIGHTS ( + ) BROWN (+) IN DRIVERS KICK PANEL POWER LOCK SEE NOTE #1, (for BASE MODEL TRUCKS, SEE NOTE #4) POWER UNLOCK SEE NOTE #1, (for BASE MODEL TRUCKS SEE NOTE #4) DOOR TRIGGER GRAY/BLACK (-)(DRIVERS) and BLACK/WHITE (-)(PASSENGER), SEE NOTE #5 @ EACH DOOR MODULE, IN EACH DOOR DOMELIGHT SUPERVISION GRAY/BLACK (-) @ BCM, BLACK PLUG, PIN E, SEE NOTE #3 TRUNK RELEASE N/A SLIDING POWER DOOR N/A HORN BLACK/YELLOW to BLACK (-) @ STEERING COLUMN HARNESS TACH Any wire NOT, PINK, BLACK or BROWN (AC) @ IGNITION COILS or FUEL-INJECTORS WAIT TO START LIGHT DK. BLUE (-) @ INSTRUMENT CLUSTER, PIN A2 BRAKE WHITE (+) @ BRAKE PEDAL SWITCH FACTORY ALARM DISARM LT. GREEN (-) @ DRIVERS DOOR MODULE, IN DOOR, BLACK 26-PIN PLUG PIN 15 ANTI-THEFT GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1 @ IGNITION SWITCH EXTRA INFORMATION NOTE #1: This vehicle uses GM'S PASSLOCK 2 ANTI-THEFT SYSTEM that requires a 791 Bypass Module to Remote Start, if you are using a REMOTE STARTER ONLY, use the 791. IF you are installing a REMOTE STARTER with KEYLESS ENTRY you MUST USE the INTERFACE BYPASS MODULE, Part # DB-ALL or XK09, EITHER Bypass will do the Anti-theft and Keyless entry. If connecting a keyless entry only you can use the GMDL-BP. NOTE #2: The IGNITION #2 wire WHITE must be connected to prevent a CHECK ENGINE LIGHT from turning on and to prevent DAMAGE to the TRANSMISSION on this Vehicle. NOTE #3; The BCM is located under the Drivers Side of the dash, the BCM has 6 plugs on it, with the PURPLE plug on the back. NOTE #4: On BASE model truck the DOOR LOCK INTERFACE MODULE is not necessary, the LOCK wire is a LT BLUE (TYPE B) @ the BCM, LT BLUE PLUG, PIN B5, and the UNLOCK wire is a WHITE (TYPE B) @ the BCM, LT BLUE PLUG, PIN B10. NOTE #5: On BASE Model trucks, the Door Trigger wires are @ the BCM, LT BLUE PLUG, PINS B4 and A5. On 4-Door Trucks the LEFT REAR Door is a LT BLUE/BLACK (-) PIN A3 and the RIGHT REAR Door is a LT GREEN/BLACK (-) PIN A2, located in a PURPLE PLUG at the BCM, use all 4 wires and diode isolate when installing an alarm system.

The best thing is to fix it properly. There is info all over the web about bypassing the pellet in the key. They use proper resister with a jumper wire across the proper wires, under the dash. It just bypasses the pellet in the key and some wiring in the steering column. If problem is somewhere else in the security system, using that bypass won't work.

There may be some aftermarket remote start systems that may bypass everything, I don't know?
I need vehicle model and engine size, I couldn't find security wiring diagram?

Try your spare key. It could be that the primary key you have been using needs to be reprogrammed, which can be done by contacting a dealer. A spare key will have the same microchip technology, and because it has not been heavily used, the microchip will still be good on that key. Depending on your make and model, you might be able to save some money and call a car locksmith and ask about services for reprograming keys if the spare key does not work.
Turn the key to the "On" position in order to reset the pass lock system. Wait for fifteen minutes with the key in the "On" position. If the security light disappears, turn the key to the "Accessories" position and wait for a couple of seconds. Turn the key to the "Off" position and take it out from the lock cylinder. Wait for a couple of seconds and turn the car on as you normally would.
Install a relay that bypasses the security system if your car is using a remote starter. Contact your remote starter dealer or installer to ask about the relay. It is possible to also install the relay if you do not use a remote starter. Install the relay by finding an electrical circuit diagram for your vehicle and locating the security immobilizer circuit. Cut the circuit with wire cutters and solder the bypass wire into the circuit. Test it by turning your car on to make sure that it works.
Take your key to a dealer or a hardware store if you have recently lost a key or replaced the ignition switch. Only some hardware stores are able to duplicate microchipped keys while nearly every dealer will be able to help by making a duplicate key with a microchip.
V15 GDS VCI Diagnostic Tool for Hyundai and Kia

If you bypassed it at the ignition switch and not at the Theft Deterrent Module, you have only bypassed a portion of the system. Go to this link for info on the subject.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

http://newrockies.com/passkey They sell a bypass for your 95 regal factory security system.
On the left side of the site it says. PRO VATS full bypass. Thats the thing you need to bypass the factory security system.

I don't mean to cast any doubt about your automotive electrician skills, but from what I have seen researching problems on this subject, even the pros are having problems when it comes to installing aftermarket electronics on late model vehicles with factory security systems. One little mistake and the system will lock down your truck to where it won't start. Consider having the remote start installed at a shop that specializes in such things. If anything goes wrong, they'll be responsible for making it right. If you do it, and something goes wrong, you'll be out big bucks to get things working again. Just my 2 cents. No offense.

check to see if the security light or anti theft light flashes. if that is the case, sounds like the bypass for the remote starter may be causeing the no start by tripping the anti theft system. Remove remote starter and bypass system and join any cut wires back together that may be cut for remote starter. Try starting, if theft light still flashes leave key in the on position after attempted start for 15 minutes till theft light goes solid, turn off and try again. Repeat process for three times to re-learn factory theft system in vehicle. If problem still persists, then take to your local dealer to reprogram factory theft module in the cluster.

There is a way to do this with a resistor I donot know how but you can do it with security bypass module for a remote start system. You can purchase these any where that sell remote starts. Follow the directions for installing the module but on the wire it tells you to hook to the remote start, ground it or hook to a key on ground if you can find one. Any questions please ask.