Thanks again for the help, I think we have it isolated down to the relay. The car is number 0153xx and that seems to be outside of recall 131 bulletin. Is there consensus on using two relays in the place of the 9494782 for this car?

This is perfect, first thing in the morning I will get back to it.

Hello, I've been sponging info off this site for years but this is my first post after registering. I just replaced the brake booster and master cylinder on one of the 2001, V70 XC's with 203,000 miles. All is well except the brake light switch. I have adjusted the switch many times and the problem ...