2001 gmc yukon xl and clifford 50.7x

The power lock wires require a positive trigger. The 3 pin lock harness (which only has 2 wires) only gives a negative output so you will need relays or a door module such as the DEI 451M to convert the negative pulses to positive ones. Blue - unlock output Green - Lock output If not using the 451M, you would wire 2 relays like this On the Yukon, the power lock wires are in the Brown Plug of the BCM Lock - Light Blue (pin A4) Unlock - White (pin A3)

Primay 12 pin harness on the Viper system H1/1 - RED / White (for trunk) - not used since the trunk unlocks with the rest of the doors H1/2 - Red - goes to a 12v constant wire (Red from ignition harness) H1/3 - brown - connects to the red positive wire of the siren H1/4 - WHITE/ brown - not used (just cut and tape) H1/5 - black - chassis ground H1/6 - violet - not used (just cut and tape) H1/7 - Blue - connects to pink/black for trunk trigger at BCM it's the light blue plug, pin B10 H1/8 - Green - connects to tan door trigger at BCM purple plug H1/9 - BLACK/ white - connects to gray/black at BCM blue plug H1/10 - WHITE/ blue - not used H1/11 - white - connects to negative parking light white wire at BCM blue plug, pin A5 (make sure to set the polarity on the remote start brain to negative trigger for the lights) H1/12 - orange - not used

The 18 pin harness should be fairly simple but I can post info on that one also if needed. Hope that helps you!

I could use the 18 pin harness as well but i should be able to figure it out. man great work really appreciate your help!!!

Sure, not a problem at all. H2/1 LIGHT GREEN/ BLACK (-) 200mA OEM ALARM DISARM OUTPUT connects to light green at BCM, purple plug, pin B3 H2/2 ORANGE / BLACK (-) 200mA AUX 4 OUTPUT optional - not needed in this setup H2/3 GREEN / WHITE (-) 200mA OEM ALARM ARM OUTPUT arms on lock with door open - you would have to split this wire into two ends and place diodes (1 amp 1N400x) with the band facing the GREEN / WHITE wire. Connect one end to the DOOR TRIGGER wire and the other to the LOCK wire. H2/4 VIOLET/BLACK (-) 200mA AUX 2 OUTPUT optional - not needed in this setup H2/5 WHITE/ BLACK (-) 200mA AUX 3 OUTPUT optional - not needed in this setup H2/6 WHITE/ VIOLET (-) 200mA AUX 1 OUTPUT optional - not needed in this setup H2/7 GREY/BLACK (-) DIESEL WAIT TO START INPUT not used for this vehicle H2/8 BROWN / BLACK (-) 200mA HORN HONK OUTPUT black wire at BCM, brown plug, pin A9 H2/9 VIOLET/WHITE TACHOMETER INPUT any fuel injector's uncommon wire OR at the ECM, plug labeled "red", pin 10, The ECM (Engine Control Module) is located near the battery, down low, between the fender and the fan under the black plastic cover. Might just be easier to go to an injector. H2/10 DARK BLUE (-) 200mA STATUS OUTPUT used to power the Ground when running input of the bypass unit H2/11 PINK/WHITE (-) 200mA FLEX RELAY CONTROL OUTPUT optional - not needed in this setup H2/12 ORANGE (-) 200mA ACCESSORY OUTPUT optional - not needed in this setup H2/13 PURPLE (-) 200mA STARTER OUTPUT optional - not needed in this setup H2/14 PINK (-) 200mA IGNITION 1 OUTPUT optional - not needed in this setup H2/15 GREY (-) HOOD PIN INPUT (N/C OR N/O) connects to your hood pin that came with the alarm H2/16 BLUE/WHITE (-) 200mA 2ND STATUS /REAR DEFOGGER OUTPUT optional - not needed in this setup (can be setup to turn on the rear defroster but i don't know which wire controls it on your vehicle) H2/17 BROWN (+) BRAKE SHUTDOWN INPUT white at the brake switch H2/18 BLACK/ WHITE (-) NEUTRAL SAFETY INPUT if it's automatic, connect with your ground. if it's manual, connect to the parking brake wire (light blue wire at the parking brake switch) Hope that helps!! I'm sorry I didn't post it before. Let us know if you need any other info. It's our pleasure to help you.