This is on a 1988 LeSabre T Type, VIN C motor, 164k miles.

I think most of my problem is that the door seals don't seal very well and lots of moisture has gotten into the car over the last few years before I had it. I'll go through each of my issues real quick:

1. Power locks. The power windows work, but no locks. I checked all the pertinent fuses and none are blown.

2. Dome light will not come on. I pulled the old bulb and it was definately bad as it had a black streak on the inside of the glass. I got new bulbs and they didn't do anything. The lights in the kick panels do work when I turn on the inside lights or open the doors. No problems with fuses on this either.

3. The defroster recently quit working. It was working fine when I got the car but recently it will not engage when I flick the switch up. It does not light up like it used to and the rear window does not defog. I have a spare unit that I could put in if its just the switch, but I wanted a second opinion first. Again, I checked all the fuses and they're fine.

4. The DS power seat does not move. I have checked that it was plugged in and the fuses are good. I also replaced the breakers with some extras I had laying around.

I'm not particularly good at tracking down electrical problems but I was wondering if they could be related to a single ground or if the moisture killed all of them.

Any insights would be appreciated.

Did you check/clean the ground buss on the driver'* side?

http://www.bonnevilleclub.com/forum/...=article&k=102

Definately a ground bus issue.

I pulled up the carpet and it was wet and I've got tons of surface rust bubbles to take care of. The door and windshield seals are shot and have allowed lots of water in.

Corrosion of the buses were so bad that one was no longer attached to the wires. Another had two wires that corroded off.

I have pictures that I'll post up soon enough.

The busses are so far gone that I cant reuse them. Can I just strip some insulation off the wires for each bad bus and solder them together?

Edit: Picture time!!

Heres the bus that wasn't attached at all



And that corrosion just flaked off when I hit it with a screwdriver...

Yes

Allright, thanks. I might just do it on all 4 busses just because I can.

The current plan for the car is to go ahead and strip the interior so I can de-water, de-rust, and reseal it properly.

Wow! Those pictures are worse than I could've ever imagined. You must have been having some issues for awhile.
I don't believe all the wires are grounds so make sure you just solder the wires from each bus together.

As far as I can tell, the winshield had a nasty leak in it for a long time which was poorly sealed with a bunch of RTV.

Both door seals are also very bad and someone attempted to repair them with foam.

And the car sat for 3 years in Florida.... so 3 years plus however long those seals have been bad... I'm guessing at least 5 years of waterleaks, if not longer.

So... yeah.... I'll post up some pictures when I start to strip the interior out.

Don't know if your car is the same, but my '93 had two 30A Circuit Breakers in the fuse box [that swings down] under the dash to the left of the steering column.
Even after I cleaned my two ground busses, I was still having intermittant issues with the power locks & the rear defogger....One of the two Circuit Breakers controls the power accessories & when I replaced it, my problems went away...

An update with my issues. I pulled the carpet and padding out of the car and have been working on other issues since.

Strangely enough, when I started to clip the ground busses off and stripping wire, the wires themselves were black.... I could scratch them and I'd get nice shiny copper though. Are my wires toast?

Anyway, my power windows suddenly quit working. I rolled down my PS window, shut off the car, restarted like 10 mins later and when I went to roll up the window nothing worked. Driver side wouldn't work and when I tried the PS it didn't work either.

I already swapped in a different set of breakers and no dice.

So... would a sudden loss of windows be attributed to another ground bus suddenly dieing or do I just need to fiddle with my master switch?