67 brake wiring

[ezernut9mm]

help me if you can. i had no brake lights (everything else worked) so i jumped the connector and got lights. i assumed a bad switch. installed new switch now i have brake lights all the time.
funny thing is they go off with the key in the off position.
i thought the brake lights worked with the key in any position.
any ideas on where to start?

[basketcase0302]

Sounds like someone's used another power supply (other than the circuit that suppose to send power to the brake lights).

I'd start by tracing down where the power is being supplied from (fuse wise).
And yes, you should have 12 volts at the brake light switch all the time.

[ezernut9mm]

ok, i have the brake switch hooked back up to what i think are the proper wires. red and red with black stripe, but the lights still only work with the key on.
i unhooked the new switch from the brake pedal and it appears to be working properly. i just can't get it to work right when it is hooked to the pedal. the lights stay on all the time.
i checked the push rod length against one i took off another 67 i had and they are the same.
i am missing the bushing that goes in the push rod hole. anyone know where i can get one?
any ideas on the switch not working when installed?
i am actually thinking about installing a pressure switch from a 61-66 truck to get the lights working right.
i don't see anything that is obviously out of whack.
help!

[basketcase0302]

I had to look to be sure. It seems the 67 has yet another "67 only" thing...the brake pedal assembly:
http://www.fordification.com/tech/clutc ... ackets.htm

My 71' does have the thin metal "bushing" of sorts, (that allows you to adjust the switch in and out stroke wise to actuate the switch). Maybe someone with a little more info on the 67' can pipe in here?

[mk]

If you can rig something up Chris, I'd, um, 'switch' to a 68-72 plunger type unit; might be easier than plumbing a pressure switch. Any strange looking wiring upstream? Maybe that missing bushing has something to do with the lights staying on. Fresh out of 67s at the moment...


mike

[fordman]

i dont think there is a spacer in there or bushing. the brake pedal bolt has a shoulder on it and that gives the actuation of the switch. if the should bolt is missing and a regular bolt has been used you will want to try and find a 67 only shoulder bolt. they are longer than the 68 and up shoulder bolts. 79 4wd may have the correct length bolt also. they also use a switch similar to the 67 switch.

[ezernut9mm]

still nowhere with this.
another thing is that the turn signals flash very quick and work without the flasher hooked up. the four way flashers don't work at all.
i guess i am going to get a crash course in wiring.
other than the splices i fixed already, i don't see any obvious wiring problems.
hopefully we will finally get a decent weekend so i can spend some time out there instead of 15min at a time.

[fordman]

is it the large square flasher box? is it two males or one male and one female spade?

[ezernut9mm]

is it the large square flasher box? is it two males or one male and one female spade?

it is round with two male ends. i can't or i should say, haven't found the emergency flasher yet. if i remember right it is somewhere behind the ash try or glove box.
i think that with all the weird symptoms i am having i am going to look at the emergency flasher side of this thing. also the 67 wiring schematic shows the brake lights coming through the emergency flasher. it might be hooked up all backwards.
i have one of the front turn signal bulbs out and the rear still blinks. i thought that when one burned out that side would freeze in the "on" position.

another thing, both the front turn signal lenses were melted when i got the truck. something fishy is definitely going on here.

[fordman]

the lights will blink faster with a bulb missing. the emergency flasher should be behind the dash support behind the instrument cluster. on the right side of the steering column.

[ezernut9mm]

the lights will blink faster with a bulb missing. the emergency flasher should be behind the dash support behind the instrument cluster. on the right side of the steering column.

if that's where the emergency flasher is, where is the turn signal flasher?

[fordman]

67's used only one as a combination flahser. so it is all in one. if it happens to have a turn signal flasher it would be mounted to the back of the insturment cluster on the left side of the column.

[mk]

The 67's had the box combination flasher until the end of nov 66 production. After that, one flasher was wired into the cluster harness and the other was wired into the main harness behind the lighter. Comparing these later '67 harnesses with 68/69 harnesses, I've found you can interchange these despite wire color differences as long as you use matching brake light and ignition switches.


mike

[ezernut9mm]

mine has the round flasher so i'm assuming there is another one under there somewhere. that is the only explanation for the blinkers to continue to work with the flasher removed. this is going to drive me crazy.

[fordman]

as soon as i can find the time i can come up and help with it. i have two more loads of scrap to haul and then a car to fix and a then i can finish up my dakaota