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DIY Power Folding Mirrors w/o modules

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35K views 28 replies 16 participants last post by  Manofmeyham  
1
#1 ·
This is a DIY aimed at the lower trim level guys who don't have the option of adding the LER sales code for the OEM folding. I did mine on a set of 1A Auto tow mirrors so the codes I had my dealer flash were LEG, LEC, and LEB. This makes the turn signals, puddle lamps, and mirror buttons work correctly when the mirror is flipped up in tow mode.

First, I gained access to each mirrors fold wiring (blue and yellow wires in the black connector) by removing the door panels.
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In order to run my wiring to the mirrors, I needed to gain access to the cab pass through harness. This is held to the door by 2 T20 torx screws and a plastic connector holder thingy(not sure what it's called) on the body of the truck.
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Now on the drivers side there are two connectors installed in the plastic retainer where as on the passenger side there is only one. I slid the wiring through one of the holes between the 2 connectors on the drivers side and then in the huge empty slot on the passenger side
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Now for my install I am using the factory sliding rear window switch in the overhead to operate my mirrors since I do not have a sliding rear window. You can alternatively just use a DPDT switch instead.

With that in mind I proceeded to route my wiring up the A pillar to the overhead
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After that I routed my ground wire underneath the steering column to the factory ground point.
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Next up, power. I ran my fused link wire to the accessory post under the hood by drilling a small hole through the firewall grommet
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Next I wired up my over head switch with QD terminals and one T-tap(this was used for the switch illumination by tapping into the console light that comes on when the lights are on) black wire is ground, pink/or is power, brown is illumination, and the remaining two brown/striped wires are for the motor - and + signals(the yellow and blue wires you tapped at the mirror plugs)
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Once everything was connected I did 2 fold cycle and patted myself on the back. Lol. Hope this helps and inspires others to tackle this project. I used trailer wire as it comes bonded and is easier to run in a pair instead of individual wires. Special thanks to Ricks Ram and maizenblue forum members who also tacked this and gave some great pointers [emoji106]


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Discussion starter · #2 ·
If you are able to source the connector with a little bit of harness left from a donor overhead harness (this is what I did) you are going to splice it in as shown in this pic:
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If you are fabricating your own harness and using quick connects onto the terminals you would wire it like this sweet picture I drew lol:
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And if you are going to use a DPDT switch use this diagram:
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Discussion starter · #10 ·
Perrysburg Dodgeboy said:
12sportmc what model truck do you have? ST and Tradesman are the only trim line without the standard power folding mirrors (non tow mirror). If your truck has the power folding mirrors all you need to do is add the power folding mirrors from the HD truck line and have the sales code for them added to your truck. All of the wiring is the same along with the door module. Now on the ST and Tradesman trucks this would be the most economical solution if you just can't live without power mirrors.

Question on the power rear window swicth. If the switch is there isn't the wiring also there? If so why not just tap into those wires? That would be a lot easier then running all new wires up to the switch.

BTW great write up!!!
Click to expand...
Yeah this is aimed at the Express and tradesman trim levels. But yes if your truck already has power folding mirrors you can just swap whatever style mirror it is you are wanting to switch to be it standard or towing. The sales codes needed are LEB, LEC, and LEG for tow mirrors. Only the first two are required for non tow mirrors. The sales code for power folding is LER. This was just a cheap and easy solution for those wanting to add the feature without spending a couple hundred on modules and a switch and then dealer fees to add the sales code. I did not have the power window switch because the Express and tradesman don't have a sliding rear window. I sourced my connector and switch from the donor over head I got off a guy on another forum. If your truck has the power sliding rear window I also put the diagram on how to wire up a DPDT switch in the write up since the window switch would already have a function. Wouldn't want the window to open and close every time you folded the mirrors lol.


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Discussion starter · #12 ·
Pics aren't showing up but I'm glad the write up worked out for you. [emoji106]. I did mine out of necessity since I park in a garage at work and it can get pretty tight with those monster tow mirrors sticking out the sides lol


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