Power Door Locks, 97 GMC Sierra, 451M

'97 GMC Sierra
Viper 560XV
DEI 451M Power door lock relay

I am trying to get my power door locks to work correctly. The truck did not come with factory keyless entry. I cannot seem to figure out how to hook up the relay correctly.

For a wiring diagram:
https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1995-97&make=GMC&model=C/K%20Pickup&ID=17895&type=Alarm

Could someone please tell me exactly which wires to hook up to where?

check this out

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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).

From other thread:

From linked thread:
You can use two SPDT relays or DEI's 451M. Wire it like this: Actuators/Reverse Polarity Diagram

The blue wire is your (-) unlock output and the green wire is your (-) lock output.
Also, if you use a 451M, it should plug into the alarm brain in place of the 3-pin plug with the lock and unlock wires; in that case just ignore the 85s and 86s in the above diagram.


Replied this to the wrong thread earlier...

Sorry for my ignorance, but where would the "actuator" wires go? I have no idea what that is. I assume thoes wires are the brown and white ones. The 87 grounds would be in the wire that goes to the brain correct?

actually, ur car is a type C doorlock 5-wires.

i dont use the 451m but if youre to place the diagram of the 451m on here ill try to help. BTW DEI doesnt have it, its down.

alternative way is to use a relay for each Doorlk wire.
like this, scroll down to 5wire

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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).

Man can someone please tell me what exactly I need to do? I just tried doing the 5 wire with the 451m but I keep blowing the fuse. I really need to get this done tonight.

youre probably taking the purple wire to the wrong source then.  take 87 to 12 volts.  thats easy.

then follow the book that comes with the 451m to do blue/black and i think BROWN / black (could be WHITE/ black, i dont remember).  cut the wires that test lock/unlock and each wire goes to a cut end.  two wires cut = 4 wire ends and the 5th wire is the power wire.

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MECP certified installer

see if this helps:

Power Lock L BLUE DRIVER KICK #203
Power Unlock WHITE



here is what you need to do with two relays:

relay one (lock relay)
87 12v
86 12v
85 ground
87a switch side of cut lock wire
30 motor side of cut lock wire

relay two (unlock relay)
87 12v
85 12v
86 ground
87a switch side of cut unlock wire
30 motor side of cut unlock wire

i would put a in line fuse on the 12v wires....10 amp min.

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Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt

I don't have a manual for it and the one on DEI's website is missing. I will try going this again, thanks for the help guys, I'll let you know how it works.

BTW the purple wire is connected to a 12V constant.

Tried:

Purple -- 12V

Brown - Motor end (lock)
Blue - Wire closet to switch wire 1 (lock)

White - Motor end (unlock)
Green - Wire closet to switch (unlock)


Had a 10A fuse instead of 15A because ran out of 15As. But popped non-the-less.

Any ideas?

I had the ends mixed up, works great now! Thanks for all your guy's help!