Electrical Wiring Through JK Firewall - JeepForum.com

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post #1 of 6 Old 06-14-2010, 03:48 PM Thread Starter
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Electrical Wiring Through JK Firewall

Where does one run wiring through the JK firewall. I could not find any openings. I read one thread mentioning for auto transmissions use the opening where the clutch but I have a man. transmission so that option is not available.

Is there another place I am missing or do I have to drill my own hole?

2010 JK 4DR Rubicon Manual Transmissions.


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post #2 of 6 Old 06-15-2010, 07:31 AM
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Nah, just drill a new hole and use a grommet. It's not difficult. Just be sure both sides are clear and drill slow.

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post #3 of 6 Old 06-15-2010, 10:23 AM
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FWIW on either side of the dash, there is a removeable plate.
Remove the plate and push a screwdriver thru the foam into the engine compartment.
The right side comes out right by the battery.
Makes it easy to run and connect accessory wiring.
Hope this helps.

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post #4 of 6 Old 06-28-2010, 01:54 PM
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Did the same thing as Donie for my windshield lights this weekend, ran the switch through the driver side hole as explained above, worked out well.
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post #5 of 6 Old 06-28-2010, 02:01 PM Thread Starter
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Yep. Found the foam and got the wiring all done. Thanks.
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post #6 of 6 Old 06-05-2013, 01:02 PM
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Hey guys, I took your advice and had no problem getting from the engine compartment and into the cabin on my 2012 Sport S by puncturing the yellow foam. Notice that the last picture is of the clutch master cylinder which in my case being a standard transmission jeep would not allow me to puncture through the rubber seal like you would be able to in an automatic model. My new driving lights work great and it took about 15 minutes to pull the three wire I needed to pass from one side of the firewall to the other. I had a two-conductor set for the switch going to the relay near the battery and power to the switch going from the inside of the vehicle where the switch is and on to my left side front parking light bulb. This way my driving lights can only go on when my parking or regular lights are on so I don't forget to turn them off.

See the attached pictures.

Thanks, lflr-2012
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