Real Time Help Where to run wires through firewall. (1 Viewer)

[70 FJ40]

I'm trying to install a brake controller today and I can't seem to find a grommet in the firewall with enough room to fit a couple extra wires. Anyone on here today done this? Didn't think this would be the difficult part.

Thanks

 

[ntsaint]

Seem to remember using one on drivers side, up high. Sam location that water line to rear wiper uses.

 

[jemsec]

There is one on the passenger side and be sure not to pull it loose. You will never get it back on and I made that mistake. Lots of silicone sealant to make water proof again. Easy to puncture a hole smaller than then wire you are using. Use some sort of plastic punch and be sure not to score, cut , scrap the other wires. Put a No. 2 battery cable, and other wires through mine without issues.

To quote "ntsaint" there is also one on the drivers side that will do just as well.

 

[70 FJ40]

Thanks guys. I was trying to get 2 12 gauge wires through the same hole as the water line like ntsaint said but they just would not fit. In the end I just used the pointy wire tester and poked a small hole in the larger rubber grommet. I was trying to avoid this but the hole closed back up nice and tight around the wires.

 

[TXLX100]

I used the bottom of the big grommet on the passenger side.