Slick 60's

Ok I'm almost finished with my 65 4x4 build but I have 2 issues.

#1 I put the body onto a 78 3/4 4x frame how do I wire the brain box into the 65 wiring harness?

#2 I swapped the brake booster over to the 65 firewall but the rod is too long and goes past where it should mount to the pedal. Does anyone know of a booster that will have the right length rod? And does anyone know where to splice in the brake light switch?

Sorry if these questions come off as a bit dumb. But I have been putting so many hours in on this truck that my brain is fried but I want to be driving the truck to work on monday

1. its fairly simple somewhere i have a diagram if no one else posts it i willl look for it
2.should be the 65-72 rod
3.factory brake light wires are in the engine compartment you just need to move them inside to the brake pedal switch

this may help. i dont hook up the white wire. its for start timing retard.
http://www.michellesfords.com/FalconTechPage4.html

Did you swap all the parts that go from the booster to the pedal?

If so you should have a flat bar that bolts to the pedal.

Set the pedal against the stop and measure where the hole in the flat bar needs to be.

I put the booster and master cylinder from the 78 on the 65

Did you use the 78 booster brackets?

Yeah I used the 78 booster brackets

I put 1 inch spacers between the booster bracket and the firewall, then use 4 longer bolts to mount everything up. The rod will now bolt on to the brake pedal arm in the stock position. Most here rig a bracket to hold a mechanical switch that is actuated when the brake is applied. Do a search for brake light switch, some here have posted pictures. And you can swap the 78 brake pedal arm onto the 65 brake/clutch pedal support to correct the pedal/booster rod position.

You can also put a T fitting in and use the pressure switch.
If you move the switch inside, I'd recommend a GM style plunger switch, easy to fab a bracket for, easy to adjust.
I have used a Ford type pedal switch, they can be a pain to get set up right.
Pressure switch with a T;