Wiring problem

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Dec 7, 2002 | 08:00 PM

REDNECK302

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Joined: Jul 2002

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Wiring problem

Code Blue
The heartbeat just stopped.

I have a wiring problem on my 78 F150.
I have replaced the alternator and the voltage regulator and im still not getting a charge and my brake lights dont work when the lights are on but when they are off they usually work. HELP!!!!!!!!

1978 FORD F150 4X4

Dec 7, 2002 | 08:27 PM

Mike W

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Joined: Apr 2002

Posts: 7,157

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From: Central Kali

Wiring problem

Try connecting +12 to the S terminal on the voltage regulator. This will tell the regulator to supply voltage to the field terminal of the alternator. The alternator will not produce an output if the field does not have voltage on it.

Dec 7, 2002 | 11:11 PM

macguyver

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Joined: Aug 2002

Posts: 1,214

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From: Minneapolis, MN

Wiring problem

Sounds like a chassis ground problem.
Greg

'77 F-250 Camper Special 400ci driver
'76 F-250 Supercab 360ci current project
'71 Mach I 429CJ in storage
'79 F-150 for parts
huct on foniks wurkt fer me

Dec 7, 2002 | 11:34 PM

Torque1st

Posting Legend

Joined: Sep 2001

Posts: 30,255

Likes: 37

Wiring problem

The lights are definitely a chassis ground problem. Fix that first and it may fix the alternator. The regulator is grounded to the fender.

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