I had to test a used Toyota Alphard reversing camera recently. I’d sourced a used camera for a customer and wanted to make sure it worked before sending it out. This involved working out the Toyota Alphard reversing camera wiring, so I thought I’d write a brief article about it in case anyone else needs the information (and also for when I need the information again).
This is about the camera with part number 86790-58010, found in many 1st generation Toyota Alphards and probably other Toyota models too.
The first thing to trip you up with the Toyota Alphard reversing camera wiring is that the supply voltage is 6 volts, not 12. My fancy power supply would only go down to 8 volts, and then I also had 5 volts and 3.3 volts available from my modified computer power supply. Also no good.
Luckily I had an old (very old) Nokia phone charger, which was putting out 6 volts. Ideal! You could probably also use 4 x AA batteries in series.
I’ve tried to find out the tolerance on the camera for voltage variation, but unfortunately couldn’t find any more information about this.
There are 4 wires coming out of the reversing camera plug. They are red, black, yellow and white. Here is what they’re for:
|Red||6 v power in|
|Black||Negative / ground|
|White||Video negative / ground|
Testing the camera
I made up 2 sets of test leads with suitable pins so they could be inserted into the reversing camera plug. One set was my modified phone charger. The other was a modified phono / RCA lead that I didn’t need any more, with the pin of the phono plug connected to the yellow wire on the camera and the outer shroud to the white.
I connected the phono plug to the composite video input on my AV receiver and switched the power on.
It all worked. The picture was a little pixellated on a HD display but that’s because the screen resolution was way beyond the resolution of the camera. In the vehicle the screen and camera resolution are a much better match for each other.
Now you know the colours and voltage for the Toyota Alphard reversing camera wiring.
I hope this information was useful if you’re troubleshooting a camera problem or doing an aftermarket head unit installation.
If your camera is broken, feel free to get in touch if you’d like me to find a replacement for you.