Ghosts in the machine?

[71tahoe]

I have a strange problem when it rains really hard, the parking lights come on. It would be a great safety feature going down the road but it tends to run the battery down sitting in the drive. There are some leaks in the cab but I checked today and didn't find any water near the switch and the fuseblock was dry also. The strangest thing is that with the switch in the off position (pushed in) I could dim the dash lights. I suspected water may have gotten in the switch but finding it dry has me puzzled.

Any ideas?

[thirdstreettito]

Right when it happens, pull it in the garage and check. While it is still soaked.

[Rodms]

When I still drove my truck on the street it set up for 4 or 5 years and I had ghosts too,my horn would go off and one day I was at work my neighbor came over thinking something was wrong and unplugged it,but it would do it about once a month before that

[Riveted1]

When anything weird electrical starts happening, I always check grounds. Some strange things happen when you don't have good solid grounds. I don't know about the raining part and the lights. Sometimes gremlins like old cars, maybe their taking refuge from the rain and play with your lights.

[71tahoe]

Originally Posted by thirdstreettito

Right when it happens, pull it in the garage and check. While it is still soaked.

I checked yesterday when it happened again and nothing was obvious. I may get the water hose out today and try again one leaky spot at a time. I've got a couple of starting places like where my son may have wired in the fog lights and where he let the harness drag the tire (but that's been fixed or so I thought).

Originally Posted by Riveted1

When anything weird electrical starts happening, I always check grounds. Some strange things happen when you don't have good solid grounds. I don't know about the raining part and the lights. Sometimes gremlins like old cars, maybe their taking refuge from the rain and play with your lights.

So where can I get some gremlin-b-gone

[ERASER5]

As I recall, putting grimlins in a microwave oven works pretty good.