Good day! Wondering if anyone can help me with a mystery wire? It comes out of the harness just above the fuse block next to the wire for the console lighting. It has two wires coming into a single red female bullet connector. One wire is yellow/black stripe, and one blue/red stripe.
The bullet powers up with the ignition switch. There is also continuity between that bullet, and the plug in with the yellow/black stripe wire that powers up the radio. So it is part of that same circuit. The radio schematic shows the radio power wire being coupled to other wires not included in that circuit, just don’t say what color they are. The only thing I can think of is that it may be a part of the convenience light circuit. That schematic shows a blue/red stripe wire going to each of the 4 bulbs (door ajar, low fuel, seat belts, parking brake) but it shows it in a different plug in style, not a single bullet, more like a 3 bullet plug, and it don’t show it connecting with any other wires not included in the circuit, just shows it going to ignition switch for power. So curious what it is.
Also the other picture shows my blower motor wires, yellow and brown. My car is an A/C car. Schematic just shows using the yellow to the blower motor. Does the brown just get taped off then? It only shows both being used if you have a non-A/C car with both yellow and brown going to blower motor which would then be in the engine compartment rather than under the dash. Would they have put that rubber fire wall grommet on either way, weather the wires stayed under the dash for A/C cars, or went through the fire wall for non-A/C?
Thanks!
David
David it might help if you let the ClassicCougar Community know what year and model your Cougar is. That way the wiring choices are narrowed down.
Steven
Oops, sorry about that. 67 standard with 390 4 speed
That is a plug for the PRNDL lamp, which is not used with manual transmissions. You’re good.
Midlife,
So wouldn’t that wire just power up with the light switch then rather than the ignition switch, or is the auto shifter light on all the time as soon as the key goes on? Makes sense that, that’s what it is in that location next to the console light wiring otherwise.
67 & 68 shifter light is on with ignition on.
Ok thanks!
Ford went back and forth over the years between dash lamp power and ACC fused power for the PRNDL lamp. By 1970 and beyond, they used the running light signal from the headlight switch.
So on the blower motor wires; did they always have the grommet on the wires even if it was an A/C car and the wires stayed in the driving compartment? I guess I am just going to black tape the brown wire back to the harness to neaten things up.
The main wiring harness has provisions for both AC equipped cars and non - AC equipped cars.
Thanks Royce. That about does it on this thread. Now, who wants to come and put my A/C back in ![]()
Yup. That’s exactly how the factory did it with an AC car.
So a big thanks to all (on all my posts not just this one) Without guys on the forum I wouldn’t be as far as I am on my project.
Thought I would post this question here rather than another post, and besides it applies.
So on the console wiring harness; assembly manual makes it look as if it runs under the sound deadener pad, and gets taped down, exiting through the carpet cutout. This is fine and good in an automatic car, but what about a 4-speed car? I have been told by many that in a 4-speed car to cut the carpet to fit tight to the lowest small corrugation in the shift boot. Don’t make sense that the wire should come up through that spot as it would be constantly getting moved around when you shift. Can’t come out under the boot flange. That wouldn’t work. Or in with a 4-speed console is it possible in goes on top of the carpet?
Thanks,
David
So in laying things out here tonight with the console and the console harness, it appears that with the ground wire length, where I can see it was screwed to the floor, and the length of the main lead, that it only makes sense that it does indeed run under the sound mat and then comes up where the front and back carpet overlay? It will work lengthwise, so that’s the way it will go.

