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Question about a 55 T-Bird electrical problem


naford

Well-Known Member
Joined
Sep 30, 2007
Messages
800
Vehicle Year
2002
Transmission
Automatic
A little background. It's a 55 T-Bird that has a 6 volt electrical system with the positive going to the body and the negative going through the wiring.

Soem more background. First the car wouldn't start as in turn over sometimes it would turnover sometimes it wouldn't. The lights on the dash oil and alt would dim if it didn't turnover but be bright if it did. Neighbor the owner of the car replaced the starter solenoid which cured the problem for a few starts. Then back to the same old problem. Well I used a jumper wire from the battery to the soleniod and the motor would turn over without a problem. Thought it might be the ignition switch but we did some more digging. When you turn on the headlights it takes about 5 seconds before they come on. When the are on and you try to start the car they go off. Well I traced from the battery to the starter solenoid then to a circuit breaker. When I jumper across the circuit breaker the car starts the headlights come on when the switch is pulled and everything looks normal.

Now the question the circuit breaker is only 15 amps at 6 volts. I've never seen a circuit breaker do anything like this. I've seen weak ones that would work normally with small current draws. But I've never seen or heard of one that wouldn't work then work ( headlights being delayed ) then wouldn't work when a larger current was put through it. What do you think. My only fear is that there is a short that might be causing a problem but I can't find it. He is going to order a new one we think it should be at least 30 amps and maybe even 40 amps. Has anybody heard of a circuit breaker acting this way.
 
My mom's 65 Mustang did this before I ripped everything out of the car and lost it all.

The wiring going to the solenoid was shot. All of it. Battery cable, starter cable, and trigger wires.

That's where I would start looking.
 
a circiut breaker can do that.it probably has corrosion on the contacts,so it's arcing across them,and creating enough heat to trip it eventually.

i would stick to the original amperage rating...too high could lead to burned out wiring.
 

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