Keyless entry and alarm, 2002 Chevy Impala

H1/P1 - (-) 500mA Ground-when Armed output -      Use if you want a starter kill H1/P2 - (+/-) Selectable Light flash output -     Parking lights H1/P3 - (-) 200mA Channel 3 Validity Output -     additional output if you need an aux H1/P4 - (-) 200mA Interior Light Illum. Output - not needed, unless you want interior lights to go on when unlocking. I believe the impala does this already. H1/P5 - (-) Door Trigger Input -   Door Trigger wire H1/P6 - (-) Multiplex trigger input - N/A H1/p7 - (+) Door Trigger Input -   N/A H1/P8 - (-) Chassis Ground input - Chassis H1/P9 - (+) Ignition Input, Zone 5 - Vehicle ignition H1/P10 - (+) Siren Output -        Siren positive wire H1/P11 - (+) Constant 12 Volts -   12 Volt from ignition H1/P12 - (-) 200mA Channel 2 Validity Output - Connect to relay or low current trigger if you have electronic trunk pop.Ted

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

Thanks Ted! So to use the H1/P1 I would just need to ground it and utilize the starter interrupt harness that came in the kit?

i don't use Directed products, but you need a relay 85 - ground when armed 86 - ignition input cut starter wire in half 87a - key side 30 - car sideTed

2nd Year Tier 1 Medical School

Still installing as a hobby...pays for groceries

Compustar Expert

You will need one relay for your lock/unlock wire to drive the resister.

Okay, so I got it all wired up, but for some reason the DEI 451m isn't getting a big enough ground trigger for the doors to lock and unlock. I have the resistor between the vehicle lock/unlock wire and the 451. Also the trunk doesn't seem to be getting anything either. Any thoughts on the next step?

The resistor goes on the blue/black unlock wire AFTER the 451 module. Then join the lock, GREEN/ black and unlock, blue/black together then extend to lock wire. Trunk release:- BCM, grey 16 pin plug, pin A7. 451:- Purple and PURPLE / black to ground. WHITE/ black, BROWN / black don't use. Blue/black and GREEN/ black to lock wire.

Really? I thought the resistor went on the lock GREEN/ black wire. I'll give that a shot and follow up. For the truck I have it going to the solid black wire at the truck push button should I just go straight to the BCM?

You're quite right on the GREEN/ black, sorry. No go to the BCM, you're probably hitting the high current output wire. Check the voltage at red input and black ground, should be at least 12.4V+. Bet you have a poor ground. Use an existing body bolt and scrape away any paintwork.

Okay I'll see about getting to the grey on the BCM For the truck. Just looked at the fuse in line to ground on the 451 and it's blown. Not sure what caused that but it could be the problem lol

The fuse that was there was a 15 should it be a 20?