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Custom Mirror Heater Switch

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Old Oct 20, 2025 | 12:37 AM
  #1  
zhamashin's Avatar
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Custom Mirror Heater Switch

Just bought some tow mirrors that come with a heater. My truck didn’t have that from factory and I wanted a timed switch next to the mirror controls. Bought a Thermasync switch and printed a plate that relocated the factory mirror adjustment switch to make room for the heater switch.

I think it came out pretty good. We'll see how long the print holds up in the sun. I may need to get some different filament but time will tell.

Anyways, I thought some people might find it interesting.




 
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Old Oct 20, 2025 | 08:29 AM
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Switch plate looks good - well done. Wondering what mirrors you went with as I need to do some myself.
 
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Old Oct 20, 2025 | 09:56 AM
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They were just some that I got off Amazon - YITAMOTOR.

Initial impression is that the quality is good. The mirrors definitely have way more visibility compared to stock. Controls all work fine. The actual mirrors (not the housing) seem to shake/vibrate a little more than stock. I haven’t finished wiring it all up yet nor has it got cold enough to need the heat function (wiring is kind of a pain since you have to run it through the door boot).

Overall, I’m happy with the purchase for the price. If they don’t last, I’ll look into doing a swap off a 2011-2016 F250.
 
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Old Oct 21, 2025 | 08:03 PM
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Looks good. I went the simple way and just tied the heat into the park lamp signal with a relay. So anytime the park lights are on the heat is on. 5-6 years later they still work fine.
 
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Old Oct 23, 2025 | 02:01 AM
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Originally Posted by Tpayne621
Looks good. I went the simple way and just tied the heat into the park lamp signal with a relay. So anytime the park lights are on the heat is on. 5-6 years later they still work fine.
Why a relay? Source is fused right?

I'm not so hot with electrical wizardry so genuinely curious.

 
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Old Oct 24, 2025 | 02:13 PM
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Originally Posted by aawlberninf350
Why a relay? Source is fused right?

I'm not so hot with electrical wizardry so genuinely curious.
To alleviate the load on the light wiring. Heaters pull alot more current than parking lights.
 
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Old Oct 26, 2025 | 07:33 PM
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Originally Posted by kbeefy
To alleviate the load on the light wiring. Heaters pull alot more current than parking lights.
Correct.
 
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Old Oct 27, 2025 | 02:01 PM
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Nice work, I went the lazy way and put a push button on the dash.
 
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