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Tricks for running wire through firewall?

CamJake
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cheyenne383 Enthusiast

cheyenne383

Posted
Posted
On 5/13/2017 at 10:15 PM, O_J_Simpson said:

Don't. Used the dedicated plug by the door hinge GM put there just for this purpose instead.

More details/pic please? I looked everywhere when I did the light bar on my burb, ended up going through the large bundle by the column. I'll be adding lights to my truck before too long.

O_J_Simpson Senior Enthusiast

O_J_Simpson

Posted
Posted
4 hours ago, cheyenne383 said:

More details/pic please? I looked everywhere when I did the light bar on my burb, ended up going through the large bundle by the column. I'll be adding lights to my truck before too long.

Post a picture of your upper door hinge and we will circle it for you on your own truck.

  • 3 weeks later...
tanner709 Enthusiast

tanner709

Posted
Posted

For anyone still struggling with this...

 

Much easier and safer way to protrude through into the cabin.

 

  • 1 year later...
RC15Silverado New Member

RC15Silverado

Posted
Posted

OK, I spent over 2 hours trying to get through the grommet. I removed the black box but since the wiring harnesses to it are so short it didn't help much and I didn't want to remove all of the clips some of them were very tight. There are wiring harnesses right next to the grommet and I was worried about damaging them. So I gave up.

 

Next day I tried again, this time I pull the grommet out from the INSIDE as far as I could pull it out. This grommet has two parts, the outside part and an inside part. Grab it from the inside and pull it out. Sit on your running board, and reach up, pull it out of the hole and PULL. THEN from under the hood I slipped the wire NOT through the little nipple but on the outside of the grommet through inside the truck. I used thin hard wire that you use to wire up fences. It came through and I used it to pull the wire through although I had to go back and forth from outside to in, and I ended up PUSHING IT OUT FROM THE INSIDE since the wire had a plug on the end that was a little big.

 

For the light bar, I opted to not remove my grill, or drill my bumper. I installed a 12 inch LED light right under the licence plate bracket and I only drilled into the plastic air dam under the bracket that nobody will notice if i take it off and will not cause rusting. I hope that helps someone. 

Screen Shot 2019-10-13 at 11.36.16 AM.png

  • 2 months later...
Kevin Williams New Member

Kevin Williams

Posted
Posted
On 5/13/2017 at 9:15 PM, O_J_Simpson said:

Don't. Used the dedicated plug by the door hinge GM put there just for this purpose instead.

Can you explain how you ran the wires, please?  I found the grommet you’re talking  about 

  • 7 months later...
____________________ New Member

____________________

Posted
Posted

I did this and ripped wires in the factory harness. I saw the wires about to come out and with one good pull some spaghetti came out. How can I get access to solder them back up. I’m trying to remove the grommet but it’s a bit of a fight. Any ideas?

____________________ New Member

____________________

Posted
Posted

I did this and ripped wires in the factory harness. I saw the wires about to come out and with one good pull some spaghetti came out. How can I get access to solder them back up. I’m trying to remove the grommet but it’s a bit of a fight. Any ideas?

  • 6 months later...
jkking72 Enthusiast

jkking72

Posted
Posted

Needing some help. I tried this and apparently went too far to the middle and way too deep. Long story short, it's costing me a lot of time and money for a mechanic that didn't know what end was up. It burnt up some wires in there and now I have all kinds of sensor lights going off. My question is actually a simple one. Do I need to replace the entire engine harness with transmission wires or is there an easier (and cheaper) set of wires that I can replace? I've already tried to solder them and it's just not going to work. Thanks so much for the help!

  • 2 weeks later...
Tanner Smith Enthusiast

Tanner Smith

Posted
Posted
On 5/13/2017 at 3:56 PM, Bushleaguechew said:

There's a big rubber grommet next to the steering column. Cut the nipple protrusion and fish your snake thru. It will come out above the parking brake

 

 

Sent from my iPhone using Tapatalk

Is this the one your talking about? 

329DAADA-F0D0-4281-8309-36A059BD3FD6.jpeg

  • 1 month later...
15BlueSilverado Enthusiast

15BlueSilverado

Posted
Posted

Old thread, I know, but I used the grommet by the drivers door. Very easy to get to both inside and out. 

Fuse relay box pass through.jpg

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