I am blowing the fuse on my '89 240 when I run the power windows. It looks like the Rear window defogger and backup lights are on tis circuit also but I am pretty sure it is the windows that are taking out the fuse. They have been squecked and been slow to roll up and down for years. Is this a common problem and are there points to lubricate? How do I fix. I can get a few runs of the windows before it blows so nothing has actually locked up.