Wiring Through Firewall

[Gerundivus Lurker Find all posts View Profile Close Gerundivus]

Howdy folks. I have a 2014 Prado GXL turbo and intend installing a pair of spots. Once wired I will need to pass switch wiring through firewall to a designated switch. Is there an easy or specific entry point/ss (terminated by grommet perhaps) from the engine bay, through firewall to cab? I have no idea yet where to start looking for such an entry point. :roll: Tks Gerundivus.

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

There are a couple of large grommets on the passenger and driver's side. Each has spare nipples or you can use some TIG wire or a welding rod to puncture the body of the grommet. Take care not to catch existing wiring.

[Gerundivus Lurker Find all posts View Profile Close Gerundivus]

Thanks mjrandom. I will look for the grommets. Are they best viewed from under the vehicle or are they high enough to be viewed with the bonnet raised? Cheers, Gerundivus.

[Guest Close Guest]

View from above. Suggest running a 7 core trailer wire through the grommet for future signal wire expansion. Wished I had done this when I first started electrical modifications.

[Fred63 Advanced Member Find all posts View Profile Close Fred63]

View from above. Suggest running a 7 core trailer wire through the grommet for future signal wire expansion. Wished I had done this when I first started electrical modifications.

Yes this is the best option.
I made a 12 core loom up covered with a couple of layers of heat shrink then split tubing.
Put a 12 pin plug on the engine bay end ready for additional circuits.
Spare wires are tapped up behind the drivers side foot well kick panel.
I only used small gauge wire as it will only be used to switch relays or low current accessories.

[Gerundivus Lurker Find all posts View Profile Close Gerundivus]

Thanks amts and Fred63, good advice, will do. Tks to y'all. Gerundivus.

[404pug Avid PP Poster! Find all posts View Profile Close 404pug]

The trick to getting the wires through is:1] take off the door kick plate on your chosen side,2] take off the kick plate/1/4 panel by undoing the plastic nut. At this point on either side you can see where the wires go through the firewall. Use a coathanger or similar gauge wire to poke through to the engine bay. Attach your wires to this with tape and pull them back into the car. A little bit of silicon spray on the wire helps it to slide. If you do it from the engine side all of the above still applies. The nipples can be seen from above- just snip one off with sidecutters or similar. As mentioned above be careful not to snag existing wires.

[Gerundivus Lurker Find all posts View Profile Close Gerundivus]

Tks 404pug, another option to explore. Cheers, Gerundivus.