1993 Buick lesabre: girlfriend ignited cigarette lighter with pennies inside now lighter doesn't work radio doesn't work and buttons for ac don't work. It constantly blows and you can still change it from cold to hot. What could be the problem?

Some radio power sources also tie into the cigarette lighter and power adapters. You mentioned fuses appear ok, if you dont have a test light to test both sides of the fuses try swapping the fuses around from another location and see if that changes anything.. Oh and if the penny is still in the lighter try a ball of tape of the end of a pencil to pull it out.. Look for a fuse listed aux. power or radio/cig lighter. Most likely the fuse is inside the car not under the hood..(usually)..

Sounds like you shorted out the cig lighter which can also power other circuits. Have you checked the cig lighter fuse ?

hi,

there must have been a weak connection somewhere in the line.
use a volt meter to trace from the lighter to the fuse box.
I have also seen the wire connection go bad during a short in the back of the fuse box itself where the wire goes in.
follow the 12 volts and you will find your problem.

chris...

check the ground wire blk/brown

It is located in the fuse box inside car. However, many GM vehicles share fuses with multiple devices. The radio fuse may also operate the cigarette lighter, and so on. My 1991 LeSabre shared fuses. Check fuses to see if any are blown.

if not listed specifically, the fuse should be listed as accessory in the owner's manual

It is usually a yellow wire. You may also use the wire from the cigarette lighter or any wire that is a constant 12 volts.

replace the fuse anyways... actually tho.... does the radio work as it is usally on the same fuse

First of all, you had a short in the electric system that included your cigarette lighter. When you saw the spark, you saw the result of a short. What you are experiencing now is a bad ground in the system.

This is what we refer to as stray voltage, which is why your lights are staying on. This is not aa fuse problem. If you haven't unplugged your cigarette lighter, do so. You are going to need the services of an automotive electrian to solve this problem. The reason your cigarette lighter may have been unplugged is that someone else knew of the existing problem.
Bill

Check the #11 15amp fuse. It might need to be replaced.