electrical shutting off

Charging, starting, lighting, gauges, HVAC

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67 ford f100s rule
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electrical shutting off

Post by 67 ford f100s rule »

whil I am driving my bump all the accessories shut off like the guagesd and the radio. Sometimes they stop working and then start working again. What exactly could this be?
Jeff Penland

70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
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elgemcdlf
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Re: electrical shutting off

Post by elgemcdlf »

Sounds like it may be a bad or lose body ground. Hard to say on a truck that old. At this point in it's life I would highly recommend rewiring the entire truck. There really isn't that much to it.
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Thunderfoot
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Re: electrical shutting off

Post by Thunderfoot »

Ignition switch, these are all controlled by it. :2cents:
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1972hiboy
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Re: electrical shutting off

Post by 1972hiboy »

Thunderfoot wrote:Ignition switch, these are all controlled by it. :2cents:

:yt: mine would do this from time to time on a bumpy road. all the accessories would go out but the truck would keep running. Id just reach downa nd jiggle the key a bit side to side in and out and everytime they would come back on.
Rich
1973 f350 super c/s 460/c6 22k orig miles
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Re: electrical shutting off

Post by basketcase0302 »

Id just reach down and jiggle the key a bit side to side in and out and everytime they would come back on.
Good troubleshooting method. Moving the wires around while the engine is running-maybe have someone else watching the gauges. I'd also check out by the solenoid and alternator. :thup:
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1972hiboy
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Re: electrical shutting off

Post by 1972hiboy »

basketcase0302 wrote:
Id just reach down and jiggle the key a bit side to side in and out and everytime they would come back on.
Good troubleshooting method. Moving the wires around while the engine is running-maybe have someone else watching the gauges. I'd also check out by the solenoid and alternator. :thup:

Its how I found out my ignition switch was severly worn. I obviously didnt turn the key far enough to turn all the power off just a gentle wiggle and id listen for the radio to come back on. Not very dangerous and worth a try next time it happens. A heavy set of keys can wear out a switch. :2cents:
Rich
1973 f350 super c/s 460/c6 22k orig miles
1972 f350 srw crewcab special 390
1972 f250 4x4 sport custom 390fe Red
1972 f250 4x4 custom 360 FE " Ranger Ric"
1972 f250 4x4 custom 84k og miles 390
1971 f250 4x4 sport custom 56k og miles. 360
1970 f250 4x4 428 fe hp60 205 d60
Dont eat yellow snow.....
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Re: electrical shutting off

Post by bluef250 »

Ignition switch is the most likely canidate.
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Re: electrical shutting off

Post by 67 ford f100s rule »

Thanks for the help guys. I tried it and the accesories did start working again! So I guess it is time for a new ignition switch. I have another electrical question now. My driver rear turn signal is not working. I replaced the bulb and I am still getting nothing. I took a look and I think I found the suspect wire. Any idea where I can get a wiring diagram?
Jeff Penland

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Re: electrical shutting off

Post by BobbyFord »

67 ford f100s rule wrote:...Any idea where I can get a wiring diagram?
http://www.fordification.com/tech/wirin ... ghts01.jpg

http://www.fordification.com/tech/wirin ... ghts02.jpg
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Re: electrical shutting off

Post by Thunderfoot »

If your driver side "Brake light" is working and your "Turn Signal" is not then the problem is your Turn Signal Switch. If both don't work, then yes, start with checking wires and connections for the Yellow wire...
Shayne
I'm not "Brand Loyal" Ford-Chevy-Dodge-Toyota I have them all, one even cross mixed...
If it Looks good and Works good then it's ok by me. Everything has its issues from time to time...

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67 ford f100s rule
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Re: electrical shutting off

Post by 67 ford f100s rule »

Thunderfoot wrote:If your driver side "Brake light" is working and your "Turn Signal" is not then the problem is your Turn Signal Switch. If both don't work, then yes, start with checking wires and connections for the Yellow wire...
But the front drivers turn signal will light it wont blink from the extra voltage. But that should eliminate the switch.
Jeff Penland

70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
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Re: electrical shutting off

Post by 70_F100 »

67 ford f100s rule wrote:
Thunderfoot wrote:If your driver side "Brake light" is working and your "Turn Signal" is not then the problem is your Turn Signal Switch. If both don't work, then yes, start with checking wires and connections for the Yellow wire...
But the front drivers turn signal will light it wont blink from the extra voltage. But that should eliminate the switch.
Nope, it doesn't eliminate the switch.

The front and rear lights are two separate circuits. (Actually, four separate circuits)
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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67 ford f100s rule
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Re: electrical shutting off

Post by 67 ford f100s rule »

Well I must have made a mistake buying that lmc turn signal switch! Anyone have an idea where i could get a good reproduction one? Or is there sometihng I can do to fix the switch?
Jeff Penland

70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
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Re: electrical shutting off

Post by 70_F100 »

Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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