93 Z71 Door Locks

Hey guys (and girls) I am new to the forum.  First I would to say this is an AWESOME forum and website. Kudos to everyone involved!!OK I have been browsing the site looking for info on how to get some power door locks working.The Truck is a 1993 Chev truck (Z71) and I am installing a Black Widow 7150 FM Alarm/starter combo.I have tryed connecting the relays in the reverse polarity config. and the 5 Wire Alternating config. neither work.I am using the BLUE wire for locking and the BLACK/ red wire for unlock....it just will not work.  I know that the switched still work because I have tested and re-tested them after each unsuccessful attempt.

PLEASE....any suggestions would be greatly appreiciated.

did you test to ensure you you grabbed the right lock/unlock wires?  baby blue and black sound right for that truck...each wire will test +12V when hitting the switch up and down...this way you know for sure you've got the right wires (there are often multiples of the same colour)

It is the 5 wire, reversal rest at ground circuit that you need.  You'll need to cut the lock/unlock wires when you find them, and end up with a switch side and vehicle side.  Test each "side" of each wire while hitting the doorlock switch....the side that still shows +12V when switching is the "switch side".

Simply follow the diagram on here for 5 wire reversal rest at ground circuit.  Ensure your starter is providing a negative pulse (most diagrams are designed for that).  You'll notice that when the d/l wires are cut, the switch will stop functioning (duh!).  However, when the relays are wired correctly, the switch will work again...its a good hint things are right...

Perhaps the outputs off the unit aren't working right?  did you try manually grounding the lock/unlock wires of the relay harness to see?

b

The truck is a 2 door, no keyless.  Just the regular power locks. You hit the switch once and it either locks or unlocks both doors. Were in the site is the 5 WIRE Revere rest at GROUND DIAGRAM. I know were the 5 wire alternating and the reverse polarity circuit is, but I cannot find that one.

Thank you

there are usually more than one name for a circuit.  The one you want is where you find the lock and unlock wires that show a positive pulse when tested.  Then CUT the lock and unlock wires, giving you 4 "sides".  You'll have a pair of "switch side" wires and pair of "motor" or "vehicle" side wires.  From there, using the right dual relay socket is easy stuff...

b

Hey guys thanks for your help, but I am still having problems!!

87a on my relay is a constant power source if I have 87 supplied with 12V. Is this right??

IS THIS RIGHT???