1987 4runner electric problem aaggghhhh. help please

[theexonerator]

Any tips on routing for the aftermarket temp gauge wiring?
Also, for installation, I was thinking hole saw to mount it somewhere in the plastic?

[corax]

Any tips on routing for the aftermarket temp gauge wiring?
Also, for installation, I was thinking hole saw to mount it somewhere in the plastic?

out of the way and avoid any hot or sharp bits? try to push the wire through an existing rubber grommet in the firewall

[Robinhood4x4]

Yeah, there's a couple big grommets in the firewall on both the drivers side and passenger side, but the driver side is much easier to get to. From the engine side, look near the master cylinder and you'll see it. From the inside, stick your head up the foot well and you'll see it.

There's also a few grommets in the floor boards under the driver's and passenger's seat. The driver's side firewall is the best place. I'd probably avoid drilling giant holes in the dash somewhere to avoid looking ghetto. For my tranny gauge I made a little bracket and double side taped it in front of the shifters.