


Ford Signal & Running Light Mirror Harness (Tow & Small Mirrors) // 2021+ F150
5 reviewsEnter Vehicle To Check Fit

KIT INCLUDES DRIVER & PASSENGER SIDES!
This wiring harness kit converts the front lights on your 2021+ F150 into dual functioning signal and running lights. Installation only takes roughly 10-minutes and can be performed by anyone following our videos.
- The small mirrors originally work as turn signal only, however this kit allows them to operate as a running light and turn signal.
- The mirror light will be constantly illuminated anytime the ignition is in the ON position.
- The tow mirrors originally work as running light only on the front, however this kit allows them to operate as running light and turn signal (while retaining the two rear facing LED's to work as signal only).
- The mirror light will be illuminated anytime the parking lights are on.
Installation Videos:
- Small mirrors (non-tow): https://youtu.be/eLDrJjNfc_s
- Tow Mirrors (originally tow): https://youtu.be/0trM9gg_xks
- Tow Mirrors (originally small mirrors): https://youtu.be/Q5k_tIuOjNU
Fitment:
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WORKS WELL! ONCE WIRE IN
The wiring at the mirrors was straight forward but the wiring at the connector on the passenger side under the right side of the dash was a pain but I got it done. The video makes it look easy, it's not. But I am pleased now that I can utilize everything on the blinker and light of my tow mirrors.

2022 Ford F-150 Tow Mirror Light Harness.
Easy to install and worked as advertised.

Great. Works like it's supposed to

Works exactly as designed
Easy install, works perfectly. Instructions needed some changes as there is an extra module that connects in the BCM plug. You may get a CEL for the ambient air sensor but it clears up in a day or two of driving.
Boost Auto Parts
Hi Evan, We do have videos available for all scenarios - reach out to our support team at support@boostautoparts.com if you need guidance as to which video to follow. We do recommend disconnecting the negative terminal of the battery prior to install to prevent a check engine light in the event the key is cycled with the mirror unplugged (there is a temperature sensor in the RH mirror). You can rest assured that even if it trips it will not cause any adverse conditions and it is not related to the kit. The code can be cleared with a scan tool and it should not reappear. Thanks, -The Boost Auto Team

2022 F150 XL Tow Mirror Replacement
I purchased Ford tow mirrors to replace the small stock mirrors that came on my '22 F150. Purchased the Signal and Running Light wiring harness from Boost. The video was appreciated but not accurate, one battle after another, one issue after another. Disappointed and only ended up with running lights, no turn signals. Not confident in any of the crimped connections so going to go back and shrink wrap those connections as well as repaired wires that were damaged in the process of removing the jacketing to expose wires. The kit works but there are a lot of minor details that are omitted in the video. Would not recommend unless you deal with automotive wiring on a regular / daily basis like the guys in the video. Its tedious and concerning that anything will work in the end.
Boost Auto Parts
Hello Robert, We're sorry to hear of your frustrations while installing this harness. As highlighted on the product page prior to check out, and in the installation video for your specific application [Tow Mirrors (Originally Small Mirrors)], your original mirrors must be equipped with Turn Signal for plug and play operation of the Turn Signals. If your mirrors were not originally equipped with Turn Signals, our installation video will link you to an additional installation step that shows you how to properly enable the Turn Signal function on your mirrors. As always, our Sales and Support Team is standing by to answer any questions pre and post purchase. Thank you, -The Boost Auto Team