5th gen engine bay fuse box

[Mingya]

Hey guys, I'm trying to find out if the side post on the fuse box has a positive that I can power a relay to. I'd just rather not go straight to the battery. Also is there a good way to run wire/s through the firewall into the cab?
Thanks enjoy

 

[Waterfowler41]

Fuse position f37 is a switched lead in your engine bay fuse box. I used that position for my switches.


Also, there’s a rubber gasket with a nipple on the drivers side you can cut the tip on and run wires through the firewall.

 

[Mingya]

Great video, made it look pretty easy. Nice clean job.

 

[1500Bear]

Great video, made it look pretty easy. Nice clean job.

Is there a video link for this? I'm trying to add switch controller aux / warning / strobe lights (fire fighter). The lights draw about 9amps but I need to figure out the best way to grab power and how to get lines for a switch into the cab. Any help is appreciated!