No headlights
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
No headlights
I have no headlights in my 96 bronco. Parking lights work fine. Also, when i turn on parking lights or headlights, my radio shuts OFF.
Ideas? I already tried another headlight switch with the same results.
Mind you, I just had the Whole dash OUT of the truck
Ideas? I already tried another headlight switch with the same results.
Mind you, I just had the Whole dash OUT of the truck
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
You're missing a ground Brad.
The radio/dash harness is finding ground through the headlight harness, until you apply power, and then the voltage potential is the same on both sides and no current flows.
The radio doesn't pass enough current to illuminate the headlights, but that's where it's going to ground.
The radio/dash harness is finding ground through the headlight harness, until you apply power, and then the voltage potential is the same on both sides and no current flows.
The radio doesn't pass enough current to illuminate the headlights, but that's where it's going to ground.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
In another thread Brad swapped his cluster and his alternator wasn't charging.
It turned out that one of the two big plugs wasn't seated properly.
Because of that, and the fact that he had his whole dash apart, I am making an assumption that somewhere a ground is missing.
Certainly you can understand that if there is +12V on both sides of a circuit no electrons will flow.
This is how the charge light in the cluster works.
EDIT: the proper EVTM for your '96 Bronco might be a great help with these things.
http://www.ebay.com/itm/1996-Bronco-wiring-diagrams-Electrical-Vacuum-Troubleshooting-Manual-EVTM-/111046053762?pt=Motors_Manuals_Literature&hash=item19dadc4f82&vxp=mtr
It turned out that one of the two big plugs wasn't seated properly.
Because of that, and the fact that he had his whole dash apart, I am making an assumption that somewhere a ground is missing.
Certainly you can understand that if there is +12V on both sides of a circuit no electrons will flow.
This is how the charge light in the cluster works.
EDIT: the proper EVTM for your '96 Bronco might be a great help with these things.
http://www.ebay.com/itm/1996-Bronco-wiring-diagrams-Electrical-Vacuum-Troubleshooting-Manual-EVTM-/111046053762?pt=Motors_Manuals_Literature&hash=item19dadc4f82&vxp=mtr
Thread Starter
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Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Nope. Grounds are good. It is the Multi function switch. had sand in it from my sandblasting fiasco. The radio going out I think was the plug in the back of the dash not being fully seated
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