1G Is brake switch capable of runing vacuum pump

GSX_Dan · Jun 3, 2020

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.

llxkevinxll · Jun 3, 2020

GSX_Dan said:
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.

You'd likely be better off longer term using that 12v to switch a relay and let the relay with a direct battery connection handle the high current stuff. That's a relatively straight forward install and pretty cheap. I'd suggest going that route.

b00stedtalon2 · Jun 3, 2020

Here you go.

GSX_Dan · Jun 5, 2020

Thanks guys, will do. And who says the forums are dead?

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1G Is brake switch capable of runing vacuum pump

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