1969 Ford 3400 agricultural wiring lighting FRONT

neighborBOB · May 30, 2016

Hi Folks

Some questions about the wiring for the FRONT headlights.

I managed to get all of the BACK lights working (2 - beams and a red tail light on the BACK fenders) w/o issue.

Questions:

1. What did the original switch look like in this tractor, was it a single ON/OFF for ALL of the lights? (There's three wires that look like they are part of lighting (RED, BROWN, OLIVE-RED)

2. There's one wire that looks like it once went to the headlights, its just ahead of the battery in the engine compartment? This good for BOTH headlights?

3. It probably would overload the circuit if I tried to hook the FRONT headlights to the BACK harness?

Thanks
Rob

Jeepjeepster · May 30, 2016

Our 1975 tractor has 1 position when you pull on it but the factory operators manual talks about two positions.

First position turns just a set of lights on then the second position turns them all on. Cant remember the break down of what it said was turned on in the first position, etc.

neighborBOB · May 30, 2016

That seems to make sense (that it's a 3 position switch, OFF - ALL LIGHTS - MAYBE JUST HEADLIGHTS?), since there appear to be those 3 wires going to the switch.

thanks
bob

Ultradog MN · May 30, 2016

Yes, 3 position.
It's in my original owners manual but that's not handy at the moment.
I think it is off, cluster and maybe rear lights?, Headlights are second position out.
I can check tomorrow if this is incorrect.

neighborBOB · May 30, 2016

That would be super (if you could check)

This is just a 3-way toggle switch? (middle is off)

Thanks
Bob

Sean in PA · May 30, 2016

The original headlight switch was a push-pull type switch like a 1960's or 1970's car headlight switch. Pushed all the way in was off. Pull out to first click was instrument cluster illumination, tail light, power to the rear flasher (which also had its own switch at the base of the light so it could be turned off when everything else was on) and any other accessory lights it might have, and pulled all of the way out was everything that the first click got you plus the headlights.

Ultradog MN · May 31, 2016

Iooked in the owners manual this morning and
it verifies what you wrote.

neighborBOB · May 31, 2016

super, thanks

bob

neighborBOB · May 31, 2016

Anyone know if just this 1 feed off of the main harness running by the battery, feeds BOTH HEADLIGHTS?

Thanks
Rob
PS Mine's been painted over (orange when a township owned it), but it appears to be BLUE and lighting is the only thing I can guess as to what it's for.

souNdguy · May 31, 2016

just tos in a multi position headlamp switch.. like a universal with 2 circuits. put frotn lights one one, real lamps ont he other. use a fused one. headlamp switch don't have to be special..

Sean in PA · May 31, 2016

yes, both of the headlights were run off of a single wire.

The original wiring was from the "B" terminal of the Voltage Regulator (which also had another wire going to the battery) to the hot side of the key switch, and then another wire from that always hot terminal on the key switch to the light switch, so turning the key off doesn't cut power to the light switch, which means that you can run the battery down if you forget to turn the light switch completely off. Both the wire from the VR to the key switch and from the key switch to the light switch were brown. The wire from the light switch to the tail light, flasher and any other rear lights was red. The one from the light switch to the instrument cluster illumination lamps was red with a white stripe. The wire from the light switch to the headlights was blue with a red stripe.

1969 Ford 3400 agricultural wiring lighting FRONT

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