I installed three grommets in my firewall today and I'm very pleased with how they turned out. Thanks to Bob and WATRD for answering questions.

I disconnected as many hoses from my charcoal canister as I could and pulled it out of the way and tied it off. There was one hose I could not budge so I just made due. It worked out fine.


Here's the charcoal canister tied up.



I stuck my head under the dash and realized the Toyota is so smart, they actually have a pre-cut section in the insulation ready for this job!



I finished cutting it out and had a perfect spot for three water tight grommets.


I used the uni-bit that I specifically purchased from Amazon for this job and it worked great! ($20 if you can believe it!)



Here is the first hole.



Here's after the third hole.



All three installed.



Here's how the look from the inside.



I put a rubber O-ring on the outside between the grommet flange and the firewall. These things are waterproof

I'll start wiring my projects tomorrow and post more updates.

Erich

 

looks good

 

Nice.


I've got about 47 wires squeezing through the one firewall grommet on my truck haha

 

Thanks

I was gunna go that same route but I didn't think I could fit a couple of 4 gauge wires through it without risking constant leaks. I found the grommets on McMaster-Car (although I know Parts Express sells them too) at the same time finding the grommet with the 6 holes, and decided to go that route.

By the way, you save SERSIOUS cash by ordering them from McMaster-Car, they are literally 1/4 the price comparted to Crutchfield, Parts Express, etc

Erich

 

thanks for posting this...now i know where i'll drill mine.

 

lookin good. us MT guys are SOL on doing it that way

 

Ahhh, yeah, it makes sense your clutch pedal is right there. Bummer

But then again, you have a manual, so you're already ahead

Erich

 

ive got about 47 wires going through an existing grommet too. gets harder and ahrder to squeeze wires through every time!