Buncha stuff............
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Buncha stuff............
So i have a few questions , mostly dash related.
My dash lights dont work so I started trying to trace them down to see why they didnt?
I dont seem to have any power at the fuse box for them?
All fuses have power to them except one.
The ignition didnt seem right so I thought maybe that was doing it.
I had several extra ignitions so I took the one out of the truck.
Its way bigger than the ones I have , more plugs ect.
I know my spares came out of 70's trucks as I took them out myself.
(see picture for diffrence)
Why?
In my search for a AM FM radio I found a nice horn pad , a radio mount bracket and a dome light.
The guy says the dome lights out of a 79 , whats your opinion?
My dash lights dont work so I started trying to trace them down to see why they didnt?
I dont seem to have any power at the fuse box for them?
All fuses have power to them except one.
The ignition didnt seem right so I thought maybe that was doing it.
I had several extra ignitions so I took the one out of the truck.
Its way bigger than the ones I have , more plugs ect.
I know my spares came out of 70's trucks as I took them out myself.
(see picture for diffrence)
Why?
In my search for a AM FM radio I found a nice horn pad , a radio mount bracket and a dome light.
The guy says the dome lights out of a 79 , whats your opinion?
Posting Guru
Joined: Feb 2009
Posts: 1,088
Likes: 4
I'm sure Number Dummy will correct me if I'm wrong, but I believe there were three different ignition switches used from '73 to '79.
The dome light may have come out of a '79, but I've never seen one like it. Looks more like an early '90s type.
Horn pad should fit your wheel. Looks like it came off a mid-'80s. It doesn't have the same trim around it my '79 has, at least.
The dome light may have come out of a '79, but I've never seen one like it. Looks more like an early '90s type.
Horn pad should fit your wheel. Looks like it came off a mid-'80s. It doesn't have the same trim around it my '79 has, at least.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
The ignition didnt seem right so I thought maybe that was doing it. I had several extra ignitions so I took the one out of the truck.
It's way bigger than the ones I have, more plugs ect. I know my spares came out of 70's trucks as I took them out myself.
1968/79: There are THREE different ignition switches, see below.
In my search for a AM FM radio I found a nice horn pad , a radio mount bracket and a dome light.
The guy says the dome lights out of a 79, whats your opinion?
It's from a 1979 all right, in fact...dozens of them...but it wasn't available in F100/350's until 1980.
It's way bigger than the ones I have, more plugs ect. I know my spares came out of 70's trucks as I took them out myself.
1968/79: There are THREE different ignition switches, see below.
In my search for a AM FM radio I found a nice horn pad , a radio mount bracket and a dome light.
The guy says the dome lights out of a 79, whats your opinion?
It's from a 1979 all right, in fact...dozens of them...but it wasn't available in F100/350's until 1980.
This was standard equipment on some, included in a optional convience light package on others.
1979 FoMoCo Passenger Cars & Bronco // 1980/89 F100/350, Bronco & Econoline / 1980/89 misc FoMoCo Passenger Cars. I didn't look after 1989.
--------------------------------------------------------------------------------------------------------------------------------------------
D1AZ-11572-C (replaced C8AZ-11572-A).. Ignition Switch Kit ~ Includes pigtailed wire harness/plug (Motorcraft SW-1054).
This is the service part replacement switch for the POS C8AZ-11572-A switch that shorted out and caught FIRE!
Applications: 1968/69 FoMoCo Passenger Cars / 1968/69 F100/750 / 1970 F100/750 before serial number G90,001.
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DOTZ-11572-A .. Ignition Switch (Motorcraft SW-944).
1970 F100/750 from serial number G90,001 / 1971/72 F100/750 / 1973/77 F100/880 / 1978/79 F600/880.
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D8TZ-11572-A .. Ignition Switch (Motorcraft SW-1494).
Applications: 1978/79 F100/350, Bronco & Econoline.
You think Ford used the same parts for years? Think again, cuz this only applies to lug nuts.Ford has more parts that are specific to before/from certain serial numbers, specific to before/from certain productions dates than any other automaker.
And, then there's this PITA: FoMoCo is in-famous for replacing/updating 10's of 1,000's of part numbers EVERY
YEAR!
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Most dash light problems are caused by a bad headlight switch, corroded or open-circuit rheostat, or blown fuse. Pull the headlight switch **** out to one of the two stops (to at least turn the parking lights on), and rotate the headlight switch **** all the way counter-clockwise so that it clicks into place, and your dome light comes on. Check the power at the 3-A dash light fuse in the fuse box. Note the following:
1) If you have power on neither side of the fuse, the headlight switch is bad.
2) If you have power on only one side of the fuse, the fuse is bad.
3) If you have power on both sides of the fuse, yet the dash does not illuminate, the problem is downstream (burnt out bulbs, bad cluster, loose connection).
That sums up the entire operation; anything you read that tells you differently is incorrect.
What do you mean by "ignition" - the switch? Neither the ignition switch nor the ignition system itself have anything to do with the dash light circuit. The dash lights operate independent of the key or state of the engine. They are solely based on the headlight switch, as I described above. Don't put any more effort into figuring out what ignition switch to use because it has nothing to do with your dash light problem.
Fleet Mechanic
Joined: Sep 2009
Posts: 1,404
Likes: 14
From: Bloomington, IN
Dome light
Vinford, I have the same dome/map light in a couple of my 79 Bronco's that are completely original, so it must be correct for the year. But I have never seen them in anything other than a Bronco.
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Power for the dash lights comes from the rheostat in the headlight switch. It runs to one side of a 3-amp fuse in the box through a BLUE with RED stripe wire. The other side of the fuse leaves the box and branches out to the dash through the same color wiring.
Most dash light problems are caused by a bad headlight switch, corroded or open-circuit rheostat, or blown fuse. Pull the headlight switch **** out to one of the two stops (to at least turn the parking lights on), and rotate the headlight switch **** all the way counter-clockwise so that it clicks into place, and your dome light comes on. Check the power at the 3-A dash light fuse in the fuse box. Note the following:
1) If you have power on neither side of the fuse, the headlight switch is bad.
2) If you have power on only one side of the fuse, the fuse is bad.
3) If you have power on both sides of the fuse, yet the dash does not illuminate, the problem is downstream (burnt out bulbs, bad cluster, loose connection).
That sums up the entire operation; anything you read that tells you differently is incorrect.
What do you mean by "ignition" - the switch? Neither the ignition switch nor the ignition system itself have anything to do with the dash light circuit. The dash lights operate independent of the key or state of the engine. They are solely based on the headlight switch, as I described above. Don't put any more effort into figuring out what ignition switch to use because it has nothing to do with your dash light problem.
Most dash light problems are caused by a bad headlight switch, corroded or open-circuit rheostat, or blown fuse. Pull the headlight switch **** out to one of the two stops (to at least turn the parking lights on), and rotate the headlight switch **** all the way counter-clockwise so that it clicks into place, and your dome light comes on. Check the power at the 3-A dash light fuse in the fuse box. Note the following:
1) If you have power on neither side of the fuse, the headlight switch is bad.
2) If you have power on only one side of the fuse, the fuse is bad.
3) If you have power on both sides of the fuse, yet the dash does not illuminate, the problem is downstream (burnt out bulbs, bad cluster, loose connection).
That sums up the entire operation; anything you read that tells you differently is incorrect.
What do you mean by "ignition" - the switch? Neither the ignition switch nor the ignition system itself have anything to do with the dash light circuit. The dash lights operate independent of the key or state of the engine. They are solely based on the headlight switch, as I described above. Don't put any more effort into figuring out what ignition switch to use because it has nothing to do with your dash light problem.
Thanks that pretty clear ill check out my switch.
I have no power either side of fuse.
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