All power windows suddenly not working.

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All of a sudden, all my power windows are not working. This is in a '68 Imperial. I'm figuring it's one of 3 things.

1.) Loose wire at main switch or elsewhere in circuit.
2.) Main switch faulty.
3.) Circuit breaker failed.

I' going to check the circuit breaker first. It's my understanding the breaker is behind the drivers kick panel. Does anyone a picture of where the breaker is exactly located behind there. the FSM doesn't provide any pictures. And, I also believe these 30 amp circuit breakers are still available at NAPA and others. Is this still the case?

-Gregg B.
 
Check the main driver's door wiring harness if the circuit checks out to be good. A common failure point given the symptoms mentioned in you post. Broken 12-volt supply and ground wires are pretty common well worth checking into.
 
My first guess would be the circuit breaker, or the power supply to the breaker. Second guess would be the PW ground that comes off the master switch.
 
It’s been my experience when this happens with my electric windows, 90% of the time it’s my main driver door switch . I pop it out and adjust the big plug on the back , push it on a little bit tighter and give it a try while it’s out of the door.
 
First thing I went and looked at was the circuit breaker. So, I removed the kick panel. Amidst all the wires, I found a detached pigtail. Sure enough, it simply fell off the blade connector to the circuit breaker. Hooked it back up and all is well. Kind of a stupid easy fix, really. Word of caution though: be careful working around in this area without disconnecting the battery. Those breakers are tucked in there pretty good and I had some sparks fly a couple times trying to get it hooked back up!
 
Nothing custom at all. Circuit breakers are specified in the FSM for certain systems...
IMG_20220731_101741157.jpg
 
Nothing custom at all. Circuit breakers are specified in the FSM for certain systems...
Then why on a box of those does it say fuses? I bet your owner's manual calls them fuses! So, who's right and who's wrong? I'll go with the FSM being wrong!!!
 
Then why on a box of those does it say fuses? I bet your owner's manual calls them fuses! So, who's right and who's wrong? I'll go with the FSM being wrong!!!
The circuit breakers are not in the fuse block. They are elsewhere - in the kick panel, I believe.
The FSM states that one needs to refer to the ‘Specifications’ section for their location.

Maybe you could be a little more wise minded?
 
Then why on a box of those does it say fuses? I bet your owner's manual calls them fuses! So, who's right and who's wrong? I'll go with the FSM being wrong!!!
There are both fuses and circuit breakers. I you read the paragraph before on that screenshot of the FSM, you can see it also talks about fuses. Most circuits are indeed protected with fuses. However, several circuits are protected with circuit breakers instead, like the power windows, power locks, headlights, and windshield wipers.

-Gregg B.
 
I'm very disappointed at how this thread is going.
It literally takes 15 minutes to TS this.
SMH.
FIRSTLY...
Do you have one of these?

63603_W3.jpg
 
I'm very disappointed at how this thread to going.
It literally takes 15 minutes to TS this. SMH.
FIRSTLY...
Do you have one of these?

View attachment 548282

I do indeed. But like I said, I never even had to use it. When I removed the kick panel, it was obvious that all I had to do was reconnect the pigtail that had fallen off of the circuit breaker. Everything then worked as usual. It really was a stupid-easy fix.

-Gregg B.
 
There are both circuit breakers and fuses used on this vintage of Mopar vehicles. Fuses live under the instrument panel, circuit breakers live behind the driver's side kick panel. As previous people mentioned, it depends on the circuit you're working on if it's protected by a fuse or circuit breaker. It's my understanding that when you're dealing with circuits that uses coils (like motors) they're protected with circuit breakers. This is because coils by nature have relatively large inrush currents when you first activate them, which would fry a fuse overtime, even at normal loads and use. Circuit breakers avoid this problem, while still protecting the circuit.

In this particular case, the spade connector came detached from the circuit breaker. Even though the fix might have been easy, there is reason for concern here, as spade connectors are supposed to fit snug and not come loose without applying some force. The fact that it did tells me it is indeed sloppy or loose, and therefore causing electrical resistance where the 2 surfaces mate. Even just a few Ohms of resistance can be a problem here, as we're dealing with large current loads. You could potentially start a fire. Mopar used insulation material behind the kick panels and other areas, and when I tried for sh*ts and giggles to see what holding a lighter would do to this material, the result was sobering. This stuff is actually flammable! So I say get a new spade connector (crimping the old one tight won't do), clean the spade on the circuit breaker, attach the connector to the wire (make sure it fits and is crimped snug) and make sure the spade fits tight on the blade when you connect it.

Last but not least, this wire goes straight to the master window switch in the driver's side door. The connectors that connects these wires to the switch unit are usually worn, corroded and the terminals that connect to the pegs on the switch unit can be sloppy, loose or separated altogether. If the power wire coming from the circuit breaker has a loose terminal at the switch, you'll have intermittent or dead power windows at best, and/or a 30A power wire flopping in the breeze, less than an inch from large grounded areas (sheet metal). I'm not sure if someone makes new connectors for these switches?

Hope it helps, sorry for long winded answer.
 
circuit breakers live behind the driver's side kick panel
Not all of them.

The wiper and headlight switches have circuit breakers built into them. On some cars. like my '70 300, a circuit breaker is attached to the headlight door relay, under the dash and there are circuit breakers on the fuse block for power windows and door locks.
 
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