Rear view mirror replacement

I did mine for Mazda CX9. I can tell you that, in my case, the power tap points are inside the left kick panel, not on the top console. You have to route the wires inside the trim near windshield and down the A-pillar trim and down to left kick panel.
CX9 also has a top console (of course). Imagine why the Mazda instructions don't instruct ones to tap power/ground there! The wiring/fuse may be insufficient to handle the extra load.

Note: The Homelink needs constant 12V.
If yours also has auto-dimming, it needs switched 12V.
Plus, you need a good ground tap. All three can be found inside the
left kick panel. Find a wiring diagram of Prius. Those are easy to located.

 

In my Prius II, I just soldered spare Molex power connector onto the console light circuit board, and hooked both the auto dimmer and the home link to the constant 12V.

The auto dimmer pulls something like .25-.5 amps while dimming, and then holds somewhere around .05-.1 amps while fully dimmed. Leaving the dimmer on overnight wouldn't cause an issue but if you left it on while the car sat for a week or two it may be enough to drain the battery. I have never let my car sit for a week, and usually remember to turn it off, so I consider it an acceptable risk.

 

I am following this thread with the same goal. I want to install a mirror with dimming and homelink also. I'm holding off buying the mirror until I know I will be able to install it. I pulled a bit on the overhead and had no luck. I too want to tap into switched and unswitched 12v and ground in the overhead console to avoid routing the harness. However, it might not be that much work to route a harness, if you can figure out how to pop off the overhead AND the pillar cover. Mirror installation instructions I found for an older model, implied that it was easy to route the harness from the pillar base down to the electrical access area. If the harness had the appropriate molex connector, then this could be easier than tapping into the overhead console. However, I pulled a bit on the pillar cover and quit when it didn't pop off easily. Plus I'm not sure where the airbags are and I don't want to accidentally deploy one of those

I'm still looking for the installation instructions and general wiring diagrams for my Prius III 2010. Anybody know where I can find these?

edit: Found this thread regarding getting manuals/diagrams (sorry, I can't post complete url):

priuschat.com/forums/gen-iii-2010-prius-technical-discussion/63088-2010-shop-manual.html

 

I also would like to do this; however, I have not located a mirror yet...where did you find yours?

As for removing the console...the part closest to the glass needs to come off first and has 2 clips on the side closes to the 2nd part...just work you fingers under the cover edge start at the glass and move to the middle, once at the middle pull down. The second part has 4 of the same clips basically on the four corners and a couple of pastic fingers pointing towards the rear of the car, so for this one pull down until the clips release starting from the glass side working back. Once all 4 clips release, carefully remove and unplug the cable.

This is about as far as I have gotten toward this mod...

 

Try searching for GENK40 or GENK41 or 50-GENK40A or 50-GENK41A. They are made by Gentex. The lowest price I have found is on eBay.

Here is a description I found for the difference between the two:

What is the difference between the 50-GENK41A and the 50-GENK40A? The 50-GENK40As wiring harness is a direct plug and play where as the 50-GENK41A you have to place the pin in the right spots manually.

The 50-GENK40A is recommended for those who don’t have a lot of experience with wiring.

The 50-GENK41A windshield-mounted mirror comes complete with detailed installation instructions and all necessary hardware – perfect for the experienced do-it-yourselfer or professional installer with some wiring required. And, the 50-GENK41A Auto Dimming Rear View Mirror comes with 3-year / 36, 000 mile warranty. See what a difference the Auto Dimming Rear View Mirror can make.

Notes: The Gentex Wire Cover is highly recommended if there is 3†or more space between your mirror and the headliner. It conceals otherwise loose and visible wires running to the mirror (See link Below).

​

 

there are 4 studs on the console, plus 2 pieces of black plastic that point toward the rear...Just pull hard on the front window side and it will pop out.

 

You're in luck I just pulled the front door paneltoday, with pics.
http://priuschat.com/forums/gen-iii...s/67089-removing-front-door-6x9-speakers.html

 

Crutchfield hasn't updated their website to reflect the 2010. I think they are just transferring the 2009 info. Bad, bad thing to do.

 

Yeah, I guess the 4 studs are harder than the 2 in the front piece. I gave up twice because it felt like the back piece takes much greater pressure than the front piece.

I just want to disable the LED for the shifter light. I don't need a spotlight on the shifter while I drive

 

Got my mirror today...I was hoping that it would plug into the console (somewhere). But the wiring that came with the mirror is a lot more than I expected. May have to get a multimeter and check out the connections in the console (or maybe see if Toyota has a different harness that would work).