The real challenge with these type of mirrors though, is the wiring. Honda used an entirely different wiring plug with these mirrors when compared with my original mirrors, as there is an additional 2 wires for the indicator itself. This means I have to add in some wiring from the side repeater and through the door grommet, up to the connector for the mirror under the door card. Unfortunately, the wiring colours they used are also completely different from the basic setup too.
So I set about figuring out a wiring diagram. First stop was to check online and see if anyone else had already done the leg-work, but I found some contradictory information. I was going to have to just get stuck in.
First things first, crack open the entire mirror for a closer look. Since I’ll be painting them, I needed to strip them down anyway. I was able to identify the 2 wires that go to the indicator and another 2 that go to the heater element. This left only 3 wires to figure out.
To complicate matters slightly, the wiring colours are different from the left mirror to the right one.
Working from the right (drivers side) mirror, I identified that the Pink and Purple wires were the 12v and Ground of the indicator LED in the mirror. In addition, the 2 Black wires were for the mirror heater. It doesn’t matter which way around these actually go when attached to the mirror. This left us with a Yellow, a Blue/Black and a Blue/Green on the drivers side, and Light-Green, Yellow and Grey on the left/passenger side.
You can see I have paired up some of the wires in the next image. This is the drivers side (right side) turn signal mirror.