Instrument panel wiring, please help!

[bryanmartin]

Hi everyone,
I'm replacing my wiring harness in my '79 Bronco with a Painless 12-circuit harness. The problem I'm running into is that the instructions are written for separate gauges, not the printed circuit type like ours. I've traced out all of the wires and what they go to on the printed circuit, but I can't figure out how the gauges gets their power.

Here's what I have:
Blu/Red = Instrument lights
Yel/Blk = Alternator gauge
Red/Org = Alternator gauge
Grn/Wht = Left turn indicator light
Blk = Gauge ground
Org = Fuel sender
Wht/Red = Oil pressure gauge
Red/Yel = Brake warning light
Ppl/Wht = Brake warning light
Pnk = Seatbelt warning light
Grn/Blk = High beam indicator light
Wht/Blu = Right turn indicator light
Red/Wht = Temp gauge
Blk = Light ground

According to the Ford wiring diagram there should also be a Blu/Grn and a Red/Grn wire going to the gauges, but I don't have those. Are the gauges and lights powered by the sending unit wire, or is there separate power coming in somewhere? The Painless harness has wires for the sending units, and a separate power wire that I'm supposed to jumper to each gauge. That doesn't work with the printed circuit. Please don't just send me a copy of the standard Haynes/Chilton wiring diagram, I have those and they aren't helping.

Thanks!

[HIO Silver]

Go here: http://www.fordification.com/tech/schematics_h.htm

Here's a really nice schematic
http://www.fordification.com/tech/wiring/wiring-Instruments

[bryanmartin]

The first link, I already looked through that. Doesn't help though.

The second link... doesn't help with my issue, but it will go in my favorites folder

[tbone6]

Well, not sure it will help on a 79 bronco, but here is the 72 F100. It is the wire #30 Violet that powers the CVR.

Untitled.jpg

[bryanmartin]

Well, not sure it will help on a 79 bronco, but here is the 72 F100. It is the wire #30 Violet that powers the CVR.

Untitled.jpg

That's awesome. Do you have the list of what the rest of those go to so that I can compare with what I have? Thanks!

[tbone6]

That's awesome. Do you have the list of what the rest of those go to so that I can compare with what I have? Thanks!

Ignore the wire colors on the right, they were for a kwikwire harness. The nomenclature should be good to go.

2.jpg

Your welcome!