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Pontiac of the Month

58Bonne's 1958 Bonneville

2019 June
of the Month

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electric windows and seat


Hello, I have a 1965 lemans that has electric windows and electric seat, they have worked awesome for the 10 yeras i have owned the car, till this last saturday whne they hno longer work, i was reading my chassis manual and it mentioned these were options so there is no info in that manual other than it shows in electrical that they are powered off a 40 amp breaker, does anyone know where i can find this breaker?  the seat and windows worked anytime, didn't have to have the key on. im sure the breaker is toast just gotta find it

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Hi Tomy2tone. Welcome to FP.

Power windows and seats would be driven off of the power/accessories fuse on the fuse block under the dash. This is either a 30 or 40 amp fuse. Check your owners manual. It should have a map of this fuse block and what amperage the fuse should be. Check your fuse, if it is bad replace it. If the fust is fine, then I suspect something else....


Now from what you described, being able to move the windows up and down and seats without the key in the ignition is a similar "problem" I had with Lucy, my '72 Lemans convertible for over 20 years. I could power down the windows and the power convertible top without the key. The car is not designed to do that - at least mine is not - and I suspect yours it not if you read the owners manual. The key is suppose to be in the run position in Lucy for the top or windows to work. So what happened to me and may have happened to you is a failed / partially failed power relay. 

For Lucy, the power relay for the power accessories is behind the driver's side kick panel. Mine partially failed over 20+ years ago to bypass the ignition circuit. I suspect yours did too and now the relay has failed completely. Mine failed completely 2 years ago and I could not raise/lower my windows or my top. A simple voltmeter will prove if it works. Check the body or chassis manual for the mention of a power relay that drives/supports the accessories. I knew the 'A' cars it should be behind the driver's side kick panel.

This is what the power relay in Lucy looks like and probably what you may be looking for as well.


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