Stryc9

Just bought a keyless entry system to my truck and i wonder how the locks are controlled? Negative polarity as on the -93 model?

Good old Bill

Am not sure about the remote lock question. The negative polarity also has me confused, haven't heard of the term in 50 years. My brain is locked into the fact that vehicles have been using negative ground since 12 batteries came into play. Some 6 volt systems used Positive grounds. I know, you are not thinking of that.

RocketScott

I put an alarm from Crutchfield on my '87 a few years ago. It cracks me up every time I look at the old bird and push the button. It does the "boop boop" and flashes the parking lights just like a modern car.

I'm assuming the '88 is the same as the '87. The truck has a five wire reverse polarity system. When I ordered the alarm I also ordered the "door lock interface socket". Basically it's socket that holds three relays so you don't have to wire up individual sockets. Makes it a little easier but the individual relays can be used in stead. My truck only used two of the relays since I don't have drivers side unlock priority.

I found all the wires I needed under the dash to the left of the steering column. If you need pics I can go out a take some.

Stryc9

RocketScott,

Yeah, pics would be greatly appriciated, every time i pop the hood in order to do anything i virtually have to re-invent the wheel, i'm a noob when it comes to mechanics but i do sport opposite thumbs so given enough time i'll get it right

RocketScott

Here's a link to the relay setup:

http://akamaipix.crutchfield.com/Man...4/514DLS3R.PDF

You can do the same with two relays and sockets. Just follow the wiring diagram on the front. The five wire reverse polarity diagram is on page three.

I have in my notes that the wires for the switch are black w/orange to lock and pink w/lt. green to unlock. I used bullet connectors so if anything in the system doesn't work I can unplug the relays and return to stock.

Here's the relays:


And here is a shot of the wires behind the kick panel:

Mr. Orange

Did either truck have power locks from the start? Or did you install the solenoids and switches yourselves? I'd put the same thing in my 94 but it's got regular locks, and windows.

RocketScott

I have the XLT (eXtra Luxurious Truck) so mine came with power locks.

Mr. Orange

Mine's a very stripped down base model XL. The original owner used it when he went hunting, and he wanted something basic, and easy to clean out, so the only accessory it has is the stereo I put in it. I've been wondering about changing out door panels and installing power locks for use in a keyless entry system, but that's a project for later on.

Boogerburns

Seems to me like another thing to go wrong on our trucks ahhahahah

Codysun

i put some on my 87 i just spliced into a wire that has a current always going through it and the spliced into the wire that goes to the unlock button on my door