Thread: Large (ish) power cable routing through firewall

Originally Posted by imaz

Near the brake booster, there is a massive trunk of wiring looms through a large grommit. I routed 4 x 8awg through that. I use a pickup tool claw from the inside, and then fish the wire through - otherwise you need to move the TCM out the way first which is another pain.

Hi Imaz, all D3s, D4s and RRSs have a large clutch cable grommet located high up on the firewall to the right of the brake booster, ( on the motor side of the brake booster )

This is a large grommet and as there are no manual D3s or D4s, the grommet is always unused and available for running a number of large cables into the cabin from the engine bay.

Originally Posted by drivesafe

You must have one of the few clutched D3/4.

I'm told they're not particularly common.

Originally Posted by drivesafe

In this case, have a look at the hole in the firewall, directly behind the accelerator peddle.

While it is smaller, you can get two 6B&S cable through that hole.

Yeah, that was where I was headed next. Just need to source some bigger cable locally. Most of the stuff at the "usual suspects" tops out at 6mm2.