Originally Posted by ka24deroadster (Post 3530347)

On my truck and the wiring diagram there is a black wire that runs from the firewall junction block to the junction block next to the battery. There is a black/white wire that runs from the firewall junction block and splices into the red Power wire that runs from the battery to the firewall. The diagram for the cab does not have anything shown for the terminal to the black and black/white wires. What do these wires do? Where do they go to under the dash?

Originally Posted by blukangoo (Post 3574523)

I´d say that these wires have been put in by a previous owner. The wires in Fransiscos Diagrams are Factory. I have found a few things missing in the diagram but haven´t had time to change them or let Fransisco know.

Originally Posted by 1971 GMC SHORTY (Post 3629093)

Can you please e mail me a bigger wireing diagram... Bad eyes :metal:

Originally Posted by baller5040 (Post 3630796)

Will these diagrams work for the year 82 also or is there alot of diffrences?

Originally Posted by hotrodlover (Post 3631330)

hey your whole wiring diagram has a problem that cant be fixed in adobe when you try to download

Originally Posted by blukangoo (Post 3635367)

I can´t answer that one for you.


I just tested them again and opened them with Adobe Acrobat Reader 9.0 and they worked.

@ Francisco - I was in the shop a couple times since I wrote the last time and never remembered to look at the plan.
Here is what I can remember in the "Master Plan":

You could change the Heater wire to look like picture #1 and
maybe tell me what the wire is in picture #2.

Pic #1
http://img137.imageshack.us/img137/3702/heaterwire.jpg

Pic #2
http://img145.imageshack.us/img145/246/whatsthis.jpg

Originally Posted by blukangoo (Post 3636351)

18 is the wire guage and T is Tan. It´s not the wire for the dimmer switch.

It is just not logical the way the wire is. Is starts on the firewall and ends on the firewall and is not part of any curcuit.

@ Drew - Nice collection you got there! Thanks for hosting the diagrams for and from Francisco!

Here are the direct download links from Drew:

Master Plan
Engine & Front Lights
Rear Lighting
Bulkhead #1 (Cab)
Bulkhead #2 (Cab)

Originally Posted by blukangoo (Post 3823723)

Hi Francisco,
I was just going to send you a PM and it told me that your Mail Box is full.
Sean

Originally Posted by Earley (Post 3872769)

If someone could shoot me an email with the hi-res it would be greatly appreciated. Going to be rewiring here pretty soon and would be great to have. Thanks ahead!

kenneth.earley@okstate.edu

Originally Posted by blukangoo (Post 3875529)

Hi Kenneth,

Just go up to Post #164 and download them from the links Drew posted.

Greetz from Germany
Sean

Originally Posted by actconstruction (Post 3905507)

Do you still have these documents in hi-res? There is an awful shortage of wiring diagrams like this, even in my vehicle specific repair manual. This is awesome. If you still have them, could you send to actconstructiononline@yahoo.com ? Thanks in advance. Keep up the good work. People need diagrams for these old vehicles that have been cobbled together real bad over the years.