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Running power cable into cab?


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I have searched for hours , but no luck here...

 

Anybody have some pictures of how they ran power wire into the cab from the engine bay?   I see the "obvious" grommet on the passenger side firewall behind the battery has a long protruding rubber tube that appears to be for this exact purpose.  Inside, under the glovebox you can just see a dimple in the same grommet that I thought would correspond with the outside tube- I pressed a snake through there but no dice...  I don't want to push much harder not knowing what's in there.  I definitely want to come in through the passenger side with my project...

 

Any help here?   Thanks!

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  • 3 months later...

I ran many switching wires up through the floor under the drivers side foot area through that round rubber seal that the e-brake cable runs through on my 15 sierra. You'll have to remove the bottom trim and lift carpet to fetch them and stick them down using sticky backs and zip ties. I would just poke a hole through that seal with an awl so it seals great around the wires. I never noticed a bump in the carpet after installation if it's done clean. I just ran them to the center console side slot and installed some switches there.  Probably a little late response on this , ha.

Edited by SierraScreech
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There is plenty of room on the passenger side fire wall to run Power wire in. I just Ran a 1/0 Gauge wire thru the firewall.  I drilled a 1 1/8 hole to the left of the Factory grommet and used  Compression grommet to seal the wire in. It was supper Easy. I also ran the Fog light wire thru the factory nipple. I used a long plastic tie wrap and pulled it thru. I will try to post some Pics tomorrow .

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Cut the tip off of the passengers grommet from under the hood. The dimple you are talking about is a hole. I thought it was a dimple when I looked, but it's difficult to see in such an awkward position lying on your back on the floor board, but it passes through. I used some 14ga wire as a fish. Push out from inside of the truck and pull it on out from under the hood. I used some hand sanitizer as lube when I pulled 4ga cable and it worked great.

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  • 11 months later...

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