Today I replaced the hood release latch under the dash, man what a PITA to get that screw in for it, but I have never been so happy by such a simple item.

ANYWAY... while I was under there, I started poking around with my aftermarket alarm that I partially disabled when I was having all the VATS issues last year.

I got all the alarm, motion sensors, siren, and vehicle disable wired back up, but something I noticed that wasn't working was the keyless entry.

The alarm computer has a plug for it which wasn't plugged in that I can't find. There are also two wires for "Door Input +" and "Door Input -" that are the only two wires that are not connected to anything. I know when I first had it install that the keyless door locks in the thing DID work.

SO... my question to you all is... where can I find the wire that controls the power locks?

I tried searching my All Data Pro schematics, but I have failed to find anything relevant that had to do with power lock wiring.

What I need to know is which wire I need to splice into the get the signal to make the power locks do their thing, and where is it located?

My main harness wrap was opened up to do the original install years ago for the alarm, so I have access to just about every single wire under the drivers side dash, so getting to it shouldn't be much of a problem. I just can't find what wire to use.

Any help would be appreciated, as I would REALLY love to get the keyless entry working again.

For those that don't know, its a 1989 Coupe.

 

I would check the manufacturer's website for info on your model. The door lock system is a reverse polarity type. It takes 4 wires from my controller to handle the door locks. Here is a page from bulldog showing what wires for their system. May shed some light, but finding your own install manual is your best bet.
http://www.directwholesale.net/diagr...5819&MakeID=54

 

Mine does not have any GM or any vehicle specific info with it.

The color scheme from your manual greatly helps though, thanks for the info. Now I am trying to figure out which system the Corvette uses for its locks (3 wire pulse, 5 wire pulse, etc)

This is mine:
http://www.caralarm.com/manuals/K-9/k9-mundial.pdf
Omega K9 Mundial 2 (manual is for the previous model, but its the same thing basically)

 

Hey Joe, don't know if this will help, my K9 is installed on my 92. The 92 uses the " reversal at rest ground door lock circuit " and requires the 2 relay package. I tapped in to the connector under passenger side dash. The wires on the 92 are black/white for unlock and lite blue for lock. I had to spend some time under the dash with a volt meter cycling the door button because there's 2 lite blue wires in different connectors under there.
I got some extra schematics from the Omega web site ( which isn't shown on the diagram in my lap). If I remember right, I did a search for Omega Research and Developement and got a wire list from this site. I also remember having to go thru the notes list there. That's where I found: Note #203- Reversal Rest at Ground Door Lock Circuit.
My K9's been working fine for 3 years.
Good Luck

 

Hrmm now I am trying to figure out whats going on.
I know I didn't remove anything when I was tearing stuff from under the dash a couple years back, yet it looks like there is some relay module in my model that goes into the lock system and plugs directly to a 3 wire connector on the alarm module. I dont see anything that looks like relays or this plug up in the dash (thinking it maybe got unplugged somehow).

THe only two wires that aren't connected to anything are a violet and green wire, which are Door Input + and Door Input -, but from the looks of things it just seems to operate the dome light, which I couldn't care less about.

ALso, there is a wire coming out of what looks like the door's harness that is thin black with white stripe that has a spade connector crimped to the end of it that isnt plugged into anything. The only thing that looks black on your chart you linked me to is the power unlock wire... Hrmmmm....


Of course now the battery is completely drained (no clue why) so work has stopped for the day

 

Awesome thanks, I will look around for that stuff!
The 2 relay thing doesn't appear to be present, so I am scratching my head as to where it went, or how on earth the power locks were operated before with the remote without this relay package (which I did see as an option in the manual).

the black/white wire you mentioned (and I also mentioned in the post above) is coming out of my door I think, it has a larger wire crimped to it with a big spade connector on the end of it. I am trying to figure out where this goes... I am wondering if there is a relay or something it should be going into that maybe it got unplugged from... this little black/white wire seems to describe what you mentioned and what was in the chart Agent86 linked me to.

I tried googling that Note you mentioned but didn't find anything. Omega's website (caralarm.com) doesnt have any useful info either except the user manuals, which isnt helping much for GM specific wiring.

 

Joe, Yea, if you have the 2 relay module, it does plug into the 3 pin port on the alarm module. There should also be a violet wire on the 2 relay mod., that is 12v.+ that powers the 2 relays. The door lock/unlock wires from your car are also connected to the 2 relay module. There should be 4 more wires coming out of the 2 relay mod. The white and green wires are the lock wires and are attached to each end of the blue (lock) wire after it is cut. The brown and blue wires out of the relay mod. are attached to the black/white ( unlock) wire after it is cut. NOTE,NOTE: this is the way the 1992 is wired. I do not know if the 89 uses the same system. This is shown on the last page of the manual download or under page 45 in the manual itself.
I pulled the door panel on mine to verufy that the switch is a 5 wire.
Also, did you know that there is a gray ( Auxiliary Output ) coming off the alarm mod. that can be wired to open your hatch using the 3rd button on the fob?

 

Thanks so much for the help! I have a few projects that just pushed this back a week, but I will be removing my door panels to find out what the 89 has.

I think my aux port on mine goes to the shock sensor. I have 6 ports on mine:
main harness, valet button, warning LED light, shock sensor and the 3 pin one that's empty for the locks. It's driving me nuts as to where the thing went!! I am pretty sure it got removed at one point, as I found the wire for the lock that should be plugged into a relay thats not there anymore. The 6th set of pins is also a 3 pin connector, but has a jumper on it, im not sure what thats for.

My remote has 3 buttons, lock/unlock and a small 3rd one below with 3 dots on it. I though it was for panic alarm, but I could be wrong. It's been a LONG time since I had it all hooked up.

 

Joe, The door relay module is fairly small, just the 2 relays plugged into a connector with 5 wires coming off it. If it's missing, you could try the vendor the I gave you. That relay kit was only $15 whwn I bought mine, the item number was #203.
Also, looking at your other posts, the violet and the black wire on the main alarm connector that you mentioned will NOT be hooked up when you are using the door relay module. They are for door pin switches and not needed on a C4.
The auxiliary output wire ( the gray wire off the main, 12 pin, alarm connector ) is for the hatch release. I wired this to the console hatch relaese switch. It does use the 3rd button on the fob and has to be held down for 4 seconds to release the hatch.