Main Harness (H1), 6-Pin
___(5204 Wiring Diagram)____ ____(My connection)____
H1/1- Red, (+) 12vdc constant---------Battery
H1/2- Black, (-) Chassis Ground-------Chassis Ground
H1/3- Brown, (+) Siren Output---------Siren positive
H1/4- WHITE/ Brown, Parking isolation--Not used
H1/5- White, Parking light output-----BCM, Brown Plug, White wire
H1/6- Orange, Ground when armed out.--Not used
H2 Harness, 24 Pin
H2/1, pink/white, ign./flex relay cont.-- Not used
H2/2, BLACK/ white, neutral safety input-- Not used
H2/3, blue/white, 2nd Status, rear defog- Not used
H2/4, GREEN/ black, OEM alarm disarm input-Not used
H2/5, RED / white, trunk release output---- BCM, Pink plug,grey wire
H2/6, green, door trigger input---BCM, Pink plug, grey/black
H2/7, BLACK / YELLOW, dome light supervision--BCM, Pink plug, Dk. Blue/white
H2/8, BROWN / black, Horn honk output--BCM, Brown plug, tan wire
H2/9, Dark Blue, Status output------------Not used
H2/10, Pink, Ignition 1 Output------------Not used
H2/11, WHITE/ black AUX 3 output-----------Not used
H2/12, Violet, Door Trigger Input---------Not used
H2/13, WHITE/ violet, AUX 1 output---------Not used
H2/14, violet/black, AUX 2 output---------Not used
H2/15, ORANGE / black, AUX 4 output---------Not used
H2/16, Brown, Brake Shutdown input--BCM, Brown plug, lt. blue wire
H2/17, Grey, Hood Pin Input---------------Hood pin wire
H2/18, violet / YELLOW, Starter Output------Not used
H2/19, Blue, Trunk pin, Instant trigger---Not used
H2/20, Grey/black, Diesel wait to start---Not used
H2/21, WHITE/ blue, remote start/turbo timer--Not used
H2/22, Orange, Accessory Output-----------Not used
H2/23, violet/white, tachometer input-----Not used
H2/24, GREEN / WHITE, OEM alarm arm output--Not used
H3 Harness, 10-pin
H3/1, Pink, Ignition input/output---BCM, Lt. Green plug, Pink wire
H3/2, RED / white, flex relay 12v input-----Not used
H3/3, Orange, Accessory Output---BCM, Lt. Green plug, brown wire
H3/4, violet, starter output--------------Not used
H3/5, green, starter input----------------Not used
H3/6, Red, Ignition/12v input-------------Not used
H3/7, pink/white, (30) flex relay output--Not used
H3/8, pink/black, (87a) flex relay input--Not used
H3/9, RED / black, accessory/starter relay--Not used
H3/10, No Pin, No color, Not used
3-Pin/ Door Lock
1, blue, unlock output---BCM, grey plug, ORANGE / black
2, no pin, no color, not used
3, green, lock output----BCM, grey plug, pink/black