04 F-150, wiring for lighted Running Boar

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=52793
Printed Date: May 14, 2025 at 10:17 AM

Topic: 04 F-150, wiring for lighted Running Boar

Posted By: RoswellMH
Subject: 04 F-150, wiring for lighted Running Boar
Date Posted: March 29, 2005 at 10:07 AM

Sorry I'm a new-bee and I've searched here but ...

I need the wiring info to tap a wire from the dome light for lighted running boards for an '04 F-150. If it matters, the truck has every option you can buy.

I'd appreciate the help - have Sure-Grip boards & I'm adding the light kit now that it's available.

Thank you in advance for your help!

Replies:

Posted By: geepherder
Date Posted: March 29, 2005 at 9:42 PM

I can't tell you the color from memory, but I usually take a logic probe to the harness that runs up the a-pillar and test until I find it.

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My ex once told me I have a perfect face for radio.

Posted By: NowYaKnow
Date Posted: March 29, 2005 at 9:50 PM

The domelight wire is BLACK/ blue (+) in the drivers door sill harness. The park light wire if you need it is brown (+) in the same harness.

Mike

Posted By: RoswellMH
Date Posted: April 05, 2005 at 7:30 AM

Thanks Mike I'll check it out - now if I only knew what a "driver's door sill harness was .."

:-) Thanks

Posted By: Satkunas
Date Posted: April 05, 2005 at 7:53 AM

There is a 5 wire plug which is provided for a brake booster which should be at the bottom of your dash just above the gas pedal. This plug has 5 wires in it (red, white, green, black, and brown IIRC) and it is not terminated or connected to anything. I suggest using the brown and red wire in this plug for your aftermarket wiring. It is fused seperately and quite accessible. Use a relay to have a switched high current output to your running boards.

Relay pins.

85 - black
86 - brown
30 - Red
87 - to you running boards
87a - not used.

Posted By: geepherder
Date Posted: April 05, 2005 at 8:17 PM

The door sill is the panel that snaps in place below the door and covers the edge of the carpet.

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My ex once told me I have a perfect face for radio.