How To: C15a Wire-3 restoration

[Jordan Baker]

Work continued on the rear harness over the past few days. I’m not sure if they sent the right one or if the one they based it off of was different. Anyhow out of the box it needed to be worked on. Once I finished fixing it, everything lined up and the harness fit. I then started installing the wire braiding over the harness. This afternoon I started to install into the frame but ran out of time.

[Phil Waterman]

Hi Jordan

Ok now that I see your harness think I can explain the difference. They changed the location of the rear tail light blackout switch from on side frame rail with a head light dimmer switch through the frame rail, to late version that had a toggle switch on the drivers side tail lights mounting.

Now that I've seen yours will try and take some photos of the three different rear harness versions on my trucks.

Cheers Phil

[Jordan Baker]

This past week I have been working away on the front harness. I ended up drawing out a new wiring diagram from the perspective of standing in front of the truck looking back. Basically where you’d stand. Initially I had trouble sorting out the lighting toggle switches but then realized the wiring harness was made for SPST switches and not the TPST ones used on the later trucks. The Ford wiring diagram shows this much better. I made up a few jumpers to be soldered into the harness.

One question I do have. Do I have the green wires on my drawing correct? That power comes off that circuit overload piece and then the wires split into 6 individual wires going to the inspection lamp socket, dash lamp switch, tail lamp switch, tail/side switch, tail/side/headlamp switch and stop isolation switch?

[Jordan Baker]

More wiring.

[Jordan Baker]

More wiring

[Phil Waterman]

Originally Posted by Jordan Baker

This past week I have been working away on the front harness.

One question I do have. Do I have the green wires on my drawing correct? That power comes off that circuit overload piece and then the wires split into 6 individual wires going to the inspection lamp socket, dash lamp switch, tail lamp switch, tail/side switch, tail/side/headlamp switch and stop isolation switch?

Hi Jordan

From my notes the green wires in the drawing match my HUP.

But I'm not sure of the stop isolation switch, as I wired that switch different and added a turns signal flasher and a warning light which turned the function of that switch into rear hazard flasher. Brake light always works when peddle is pressed, dash warning light comes on. If the brake isolation switch is thrown, power goes to through the flasher causing the brake lights and the dash warning light to flash. If the brake peddle is pushed the brake light come on.

Your work is so neat, and nicely layed out.

Cheers Phil

[Jordan Baker]

Hi Phil

Thanks for the on my wiring plan.

You wouldn’t happen to remember how you wired in the flasher for rear hazard lights do you? I didnt see it on your hand drawn wiring diagram on your website.

[Phil Waterman]

Originally Posted by Jordan Baker

........

You wouldn’t happen to remember how you wired in the flasher for rear hazard lights do you? I didnt see it on your hand drawn wiring diagram on your website.

Yes I will dig out the notes on it, won't be able to do it until next week as I'm leaving for the Weare Summer Rally which is this week, in the morning.

The change to the wiring is real simple, boils down running continous power to the preasure switch then using the stop light isolation switch to provide blink power to the light side of the pressure switch.

Cheers Phil

[Jordan Baker]

The other day I made up the oil pressure gauge line after getting some photos from Rob. I added the asphalt loom to a couple of sections of the tubing to protect it from rubbing against the steering bracket and the harness rubbing on it.