F-150 firewall opening

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=21236
Printed Date: May 03, 2025 at 10:51 PM

Topic: F-150 firewall opening

Posted By: pem2
Subject: F-150 firewall opening
Date Posted: November 10, 2003 at 6:40 AM

Hi,

I need to find an opening in 2003 Ford F150 firewall to route wires for a 2 way radio from battery to cab interior. Can anyone provide info and hopefully photo(s)

Paul

Replies:

Posted By: metz
Date Posted: November 10, 2003 at 1:57 PM

there is usually a rubber pop in grommet towards the center of the fire wall, then again it may only be on automatics

Posted By: auex
Date Posted: November 10, 2003 at 6:11 PM

Why would you take power at the battery when you could take it from the ign harness? There is a grommet on the drivers side firewall near the brake booster.

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Posted By: defective
Date Posted: November 14, 2003 at 9:08 AM

also if your looking for a stealth wire run you can run through the black plastic harness channel at top of firewall. Also you can drill beside the ecu right behind the battery, but be carefull $$$$$$$$$$

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