So I'm installing exhaust controllers under the car in the exhaust and I want 12V switched power under the car. What wire should I tap? Should I tap it at the fuse panel and bring it outside somehow? How can I bring it outside the firewall?

Can someone help me out?

 

Bump - anyone?

 

Tap the fuse panel and run the wire through the firewall through one of the rubber grommets. There is a big one behind the battery. Just be sure to seal it with silicone.

 

Do you know which wire at the fuse panel to tap? I tried searching and came up with nothing.

 

There are a lot of switched fuses at the fuse panel by the driver's feet. Use an add a circuit so you won't have to cut any wires.