My father just gave his '91 740 (185K miles) to my son for his first car. It needs some minor repairs, but is otherwise in solid shape.

Yesterday I noticed that one of the headlights was rather dim. I replaced the bulb, but it was still dim. Then the wipers started. I thought I must have bumped the lever, but I couldn't make them stop regardless of the position of the lever. Shutting of the lights made the wipers stop, if the wiper lever was in the "off" position. Running the car w/o the headlights on was no problem, but switch on the headlights and two seconds later, the wipers kick on, as if by magic.

I searched older brickboard posts and there was one mention of a similar problem earlier this year, from a member named Wireman, but there were no replies.

Can anyone suggest a possible cause/cure for this?

Thanks much,

Ed