full power door wiring

[Blazer Eagle]

So i have a 74 Blazer from Cali, no rust right? wrong the dumbass PO thought it would be fun to drive in salt water, well ive got it, i fixed the rocker but my doors were gone there were some huge holes, i have some pics of it somewhere, well anyways I went to pick n pull to get some new doors and i happened upon a 79 truck with full automatic doors

so as i have a 74, no power, anyone have any wiring diagrams? or maybe do you think i could special order from lmc just the wiring part of there power lock and window kit? Each door has three seta of wires going out, i believe one is connecting the two doors for the windows, one is connecting the dorrs for the locks and the other is power, but what do i know? so any help would be appreciated

[joe231]

there is lots of good info here.
http://67-72chevytrucks.com/vboard/s...d.php?t=314764

you just need the wiring for the doors (Runs from door to door, and to the fuse block, up in the dash, and there is a PITA relay mounted to the frame work under the column over by the accelerator pedal), go back to the pick and pull and get it, then it is plug and play

[Blazer Eagle]

does it matter what year i get the wiring from? my blazer is a 74 and most the vehicles are newer

[BLE 'BURBAN]

The harness from the 79 should plug into your 74 I believe they're both the old school glass type fuse styles.
On the 79, there will also be a silver 30amp circuit breaker installed in the fuse block. This is for the power windows and you will need it as well.
make a note of it's location and make sure your fuse block has the proper provisions on it to install the circuit breaker. If not then you will need to get the ENTIRE UNDER DASH HARNESS and swap them out as well.

[Blazer Eagle]

so if i dont have the proper fuse box is it feasible to custom wire the doors?

[BLE 'BURBAN]

Sure just get an inline fuse holder and plug a 30amp circuit breaker into it then jumper it off any Ignition sourced circuit. If you've got power D/L's as well they get power from a "BATTERY" source junction on the fuse block, meaning they are powered at all times as where the P/W's are only powered when the key is in the "RUN" position.

[1987 Shortwide]

Originally Posted by BLE 'BURBAN

Sure just get an inline fuse holder and plug a 30amp circuit breaker into it then jumper it off any Ignition sourced circuit. If you've got power D/L's as well they get power from a "BATTERY" source junction on the fuse block, meaning they are powered at all times as where the P/W's are only powered when the key is in the "RUN" position.

BLE,

It really sounds like you know this stuff like the back of your hand... In my mass stupidity almost a century ago, I pulled all of the wiring out of my 87 when I started a full frame-off. In the course of time, I've lost this wiring. Is there a way I can build my own jumper from door to door, utilizing my own breakers for the Power locks and windows? In the course of the resto I put new doors on the truck, and the harness into the cab had been cut also... Is there a place to see a good wiring diagram for this portion of the electrical system? Aside from the doors, I have absolutely no stock wiring left in the truck, as it's all been converted over to a Painless pro street harness...

[BLE 'BURBAN]

I've got a factory wiring schematic at home for my suburban. I'll scan in the area's for the P/W & P/DL tonight and email them to you as a pdf file. PM me your email address please.
I have no idea as to how to downsize files so I can post them on here.

[Blazer Eagle]

pm sent, you might be able to use photobucket t odownsize them

[BLE 'BURBAN]

Originally Posted by 1987 Shortwide

BLE,

It really sounds like you know this stuff like the back of your hand... In my mass stupidity almost a century ago, I pulled all of the wiring out of my 87 when I started a full frame-off. In the course of time, I've lost this wiring. Is there a way I can build my own jumper from door to door, utilizing my own breakers for the Power locks and windows? In the course of the resto I put new doors on the truck, and the harness into the cab had been cut also... Is there a place to see a good wiring diagram for this portion of the electrical system? Aside from the doors, I have absolutely no stock wiring left in the truck, as it's all been converted over to a Painless pro street harness...

For your connectors, you can use these ACDELCO part numbers
ACDELCO #PT214 GM #12101822
MALE END 8 LEAD


ACDELCO #PT219 GM #12101827
FEMALE END 8 LEAD