Towing Mirror Signal Lights
 

Greetings everyone. I'm looking for some words of wisdom regarding my 2021 F150 4x4 Supercrew. My truck is the XLT with Group 300A. And it also has the factory towing package.
So my truck came from the factory with the smaller (car style) mirrors. These are power, heated, with BLISS. They do not have power fold option. I really needed to have larger mirrors and went to my dealer in search of the proper towing mirrors. So I eventually bit the bullet and ordered the mirrors in a set, part # ML3Z 17696 BA. Not cheap but I needed larger mirrors and I did not really want to experiment with after-market towing mirrors.

The install went very well and really did not take long at all. The heating, power adjusting, and BLISS all work perfectly. The new towing mirrors have two additional features which are the "puddle lights" and they also have built in signal lights. I have been able to get the puddle lights to work as well however I'm now really interested in seeing if I can get these signal lights to function.

So my question is, can the signal lights in my towing mirrors be configured to work or is it time for me to stop trying and just enjoy the new mirrors.

I'd like to thank you all in advance for any guidance you may provide and I will attach some photos off the harness plug and mirrors to this post.

Gerard Bryden
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Do you have Forscan? If so, I can send you my AsBuilt for the DDM and PDM that you can check against.

There is a device labeled as "Blinker Genie" that would accomplish what you want. Down side to that, is that they blink opposite of your existing turns.
Boost Auto Parts, supply mirrors and harnesses for the mirrors on our trucks. They sell a harness that will do the same as the cheaper Blinker Genie, but your mirror turns, and your front and rear turns, will all blink at the same time. Both require wiring work, but no big deal.
I recommend the Boost harness.