Get Through Firewall - Jeep Compass Forum
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  • 1 Post By Tyler-98-W68
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post #1 of 9 Old 06-06-2012, 12:29 AM Thread Starter
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Get Through Firewall

I want to run wires for emergency lights (I am a EMT) and cant seem to find a way to get through the firewall into the passenger compartment. Any help would be great!!!! Thanks!

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post #2 of 9 Old 06-08-2012, 10:28 AM
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if you pull the carpet back on the floor starting at the top just above and behind where the gas and brake pedals are, you will see a rubber hose (its the ac vent drain) going into the floor, pull that out and you will have a hole that runs straight into the engine bay to run wires ect, it may be a bit tough to get the hose back in if you really stuff alot of wires in it, but I had no problems getting mine back in once I ran the power line for my stereo. PM me if you need more help.
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post #3 of 9 Old 06-08-2012, 02:14 PM
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there should also be a grommet where the clutch would go if you have an automatic you can use. should be to the left of the brake pedal high up on the firewall if looking from the passenger compartment.
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post #4 of 9 Old 06-08-2012, 08:01 PM
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there should also be a grommet where the clutch would go if you have an automatic you can use. should be to the left of the brake pedal high up on the firewall if looking from the passenger compartment.
There you go, that would be the one to use. You would not want to block the A/C drain and have it backup. Otherwise make a small hole and push a grommit in it beside the drain hole if there is nothing for the drill to hit going through. You got to check that though yourself.
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post #5 of 9 Old 06-09-2012, 03:19 AM
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The AC drain doesn't actually get blocked, I used this same technique on my 2008 Patriot and used it for 4 years with no problems, however if you found another way to get through by all means use that.
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post #6 of 9 Old 06-09-2012, 01:21 PM
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let me clarify my post. there should be a grommet, and that's where i would imagine it would be. this was the technique used on the dodge sedans in the 90's and early 2000's to get from the engine bay to the passenger compartment. you just cut a hole in the grommet and run the wires inside that. but i don't know for sure that the compass automatic still has the hole in the firewall for the manual, nor do i know for sure that it is unused on the automatic.
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post #7 of 9 Old 03-01-2013, 12:40 PM
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I needed to run power for my 2m/ham radio and I did it by following the main wiring harness from the engine compartment to the passenger area through the left fender well. Found this link: http://site.justforjeeps.com/guide/82210715AE.pdf It's for offroad driving lights but it shows how to route the wires. I would modify the instructions a bit: forget using a coat hanger, pull the grommet out (it will come out a bit) and poke a length of heavy wire through the grommet and then on inside. I was using 10 guage wire and that worked, it followed the main harness inside and then fell down where I could grab it. After you have enough inside, make sure your hole in the grommet is sealed and push the grommet back in.
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post #8 of 9 Old 09-24-2017, 02:18 PM
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I needed to run power for my 2m/ham radio and I did it by following the main wiring harness from the engine compartment to the passenger area through the left fender well. Found this link: It's for offroad driving lights but it shows how to route the wires. I would modify the instructions a bit: forget using a coat hanger, pull the grommet out (it will come out a bit) and poke a length of heavy wire through the grommet and then on inside. I was using 10 guage wire and that worked, it followed the main harness inside and then fell down where I could grab it. After you have enough inside, make sure your hole in the grommet is sealed and push the grommet back in.
I joined this forum specifically to say thank you sir. I was searching the webz forever to find a way through the firewall without drill. I found this thread and your post. Your post was tremendously helpful as I would never had firguered out that way to get to the wiring harness. Thanks for posting it. I know am bringing a thread back from the dead, but I feel this was worth it.

For anyone else searching, this worked on my 2016 Compass
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post #9 of 9 Old 09-18-2018, 01:51 PM
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I did this last night and it was a bitch but I eventually got it through. Installing a dash camera. I was too lazy to pull off any parts and just used some combination of wooden skewers, coat hangers and a sturdy thin metal rod. All is working now. Thankfully I didn't pinch my fingers in the door. That spot just forward of the driver's door accessibility I give a 4/10.
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