GSX_Dan
15+ Year Contributor
- 138
- 4
- Jun 27, 2004
-
Chicago,
Illinois
Wondering if I need to add a relay to run a vacuum pump (audi) on my auto. Right now i have the 12v from brake switch going to pump and it sounds healthy, not blowing fuses. It's been like this for a while but I don't want to burn out the switch over time if it's not rated to handle that kinda load.