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Working on putting a 1994 460 EFI into my 1967 F-250 4x4. Along the way, I decided to put the wiring harness from the 1994 into the 1967 also. At the rear end of the chassis harness there are 3 plugs. One 6 or 8 pin (cannot remember which) for the taillights. One 4 pin for the trailer lights and one 4 pin for the battery charge, brake controller, trailer reverse lights.
Here is the question. There appeared to be a factory harness adapter that plugged into those 2 round 4 pin plugs and went to a 7 way for the trailer. I cannot seem to find any on eBay or any of the trailer wiring manufacturers. They are all for later model trucks. Does anyone have a MPC that they could look up the P/N for this "adapter harness"? Since my chassis harness is in good condition, I would like to keep it intact, rather than hack into it. Obviously that is an answer too.
There seems to be some wiring harness for sale on eBay, but only by P/N. Also, if anyone had the trailer side of those plugs with a good chunk of wire, I would be interested in those also.
Any ideas on where I can get these plugs? Anyone have a good junkyard source? I scrounged my local junkyard and came up with the following...
1. F-150s didnt use these plugs/trailer adapters
2. All the F-250s I tried to get access to had the rear axles removed, with frame sitting right on snowy, frozen ground. Unable to get to wiring.
A 1967, F-250 is going to have some brittle wires and probably some older splices, etc.... What I am now doing is leaving the wiring in the frame intact and simply pulling a 7 conductor "Trailer Wire" up to the firewall / dash / brake light switch and making my tie in's there. I've run into issues (lack of power / voltage / amps) with the OEM connections at the rear of the frame. Running through existing wires has left me in a situation where I'm not getting enough power to lock up the trailer brakes. Next is the issue with the wire that puts power to the trailer battery. Best to connect that wire from the 7 wire power cord directly to the hot side at the battery. I am using a "circuit breaker" rather than a fuse in that wire for the trailer power. Once you get the 7 wire pulled to the firewall you have the option to use relays rather than straight power from the brake switch and the running light switch... Those old truck switches and wires were not designed to carry a heavier load, only the load that was designed in at the factory.
Do an E-bay search on the F6TB-13A576-BA part number above. There are a few hits that are very close. F6TB vs. F6TZ may only be a Bronco versus a F150.
Do an E-bay search on the F6TB-13A576-BA part number above. There are a few hits that are very close. F6TB vs. F6TZ may only be a Bronco versus a F150.
Awesome, thanks! This got me going down the road I wanted!
Awesome, thanks! This got me going down the road I wanted!
I was actually poking around for exactly the information you're looking for when I got my truck back from paint a few months ago. I came across this, (possibly in this forum, I don't remember the poster or I would credit his photo.) There are aftermarket electrical companies that still make the plugs, it's just not a Ford part. Hope it helps you.
I was actually poking around for exactly the information you're looking for when I got my truck back from paint a few months ago. I came across this, (possibly in this forum, I don't remember the poster or I would credit his photo.) There are aftermarket electrical companies that still make the plugs, it's just not a Ford part. Hope it helps you.
Very helpful, but it appears they are all discontinued... New idea is to get the plugs from a Super Duty and graft them in. Way more availability.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
