Help with Gentex Wiring

Just took possession of my 2012 Prius v III without Gentex Auto Dim/Homelink rear view mirror. I've purchased a Gentex 453 015894 homelink/compass but am unable to identify the wiring.

The connector is a ten pin with six wires. Black, Yellow/Red, Green/White, Violet/Red, Green/Brown and Blue/Brown.

I've found two sites which identified the wiring but are not the same. Here are the two results:


Black-Ground
Purple-ACC 12V Power
Green with White-Reverse Lights
Green with Brown-Temp Sensor
Blue with Brown-Temp Sensor
Yellow with Red-Constant 12V Power

and

Black-Ground
Violet with Red-Negative Ambient Temp Sensor
Green with White-Reverse Lights (didn't use)
Green with Red-Positive Ambient Temp Sensor
Blue with Red-Ignition Switched 12V Power
Yellow with Red-Constant 12V Power

Any thoughts as it appears either the Blue/Red or Purple is 12V.

 

Flyabus.

Job is completed and not that bad. I posted some photographs in my album on my profile site. Just left click on my user name and then go to albums.

I found that acquiring proper tools made the removal of the panel much easier. Northern Tool or Harbor Freight plastic trim panel removal tools for less than ten bucks. Photo of tools in my photo album. I, like you, was very concerned about damaging the panel. Once the retainer popped it was a piece of cake.

I obtain ground by self tapping screw in side of panel frame. Found constant 12V power in overhead panel plug using test light. The keyed 12V was a little more difficult but not bad. Removed the visor, visor holder and pulled down the rubber trim around the door. I did not remove the pillar trim. I ran two wires, one for 12V switched power and one for reverse power to remove dimming from mirror when in reverse. I routed the wires behind the side curtains and then down the door frame replacing the rubber trim to hold in place. I obtained 12V switched power from the fuse box power port fuse. That would be the cigar lighter from us old folks.

I haven't found reverse power yet but will post when found.

I hope this and the photographs help. If you have questions e-mail me or ask here.

(PS - Since I'm new here I do not have photo posting privileges in the forum thus the photographs are posted in my album - sorry)

 

jrparker,

I started exactly where the tool is inserted at the front left side as seen in the photo. When you insert the trim tool you can feel the post where the retainer is mounted. I used the tool with the V end at 45 degree angle and placed the V against the post. It popped down with very little effort. I then went to the right side and did the same thing. The prying was at the base of the retainer post so I didn't bother the edge. Once the front two retainers were loose you can grab the panel with both hands and pull straight down. There are two identical retainers on the rear. These two retainers remained in the mounting hole but it was very easy to reset them in the panel.

I looked for a both switched 12V and solid 12V source and found only one. Looking at the overhead panel plug it was the far right upper pin. I had to solder a straight pin to my test lead in order to probe the plug as the pins are very small. I attached a press fitting over the wire to access power. There are other wires but I found none that were switched 12V. I believe you will have to run a wire down to the fuse box. It's actually not that bad. You'll need to remove the rubber trim from around the door, pop the top of the pillar trim but do not remove and remove the sun visor. Make sure you run your wire behind the side curtain air bag.

I took more photographs but for some reason they were not in focus. Sorry. It would have been nice if the photograph of the back of the panel was available so you could see the configuration. I'll post up the photos of the panel backside even though they are poor. You can see the white mounting push-ins in one photo and in the second you can see the holes where the push-ins go. Again, sorry for the quality.

If you were to follow the Toyota installation instruction you would have to remove quite a few components. I took the path of least resistance removing only what was necessary to route the two wires to the fuse box.

Let me know if I can answer any other questions.

 

Now that's funny!!! One of us is parking on the wrong side, however, since I know who in our families are driving the Vs we really don't have a say. LOL

Have you purchased your Gentex Homelink Mirror? If not make sure you get the GNTX-453 or a Mirror with an A behind the model. (Example GNTX 45A, GNTX 51A, etc.) A mirror from any car (Nissan, Toyota, Kia, etc.) will work but watch the mounting bracket. Some models have some weird brackets. All Nissans have Amber compass.

 

That's an excellent illustration Monkey. should prove very helpful to those who haven't removed the panel yet.

JRParker,

Running the wires is not as difficult as it seems. If you remove the visor holder, visor, top retainer on the pillar and the rubber door trim you can easily run as many wires as desired. Pull the rubber trim off the front portion of the door opening and you'll see you can run wiring down the door frame behind the rubber trim. The rubber opening trim is re installed by pressing it into place.