Nevermind, I found several other threads indicating that it is indeed the red/yellow wire.
This is the way i am going to route mine
We shall see
Don't mind my bar napkin drawing
![]()
Instead of the diodes, have you considered just using a SPDT switch for complete isolation? Flip the switch one way and the reverse wire and headunit are connected; flip it the other way and the accessory wire and headunit are connected.
This is what I did on my OEM backup camera on my 5th gen, for anytime backup camera activation![]()
Would that mean more wiring?
What do you wire these wires up to if you do not have a power antenna? I maybe misunderstand what you are saying here. I had some wires that were labeled power antenna and I did not use these. The antenna cables were coaxial and there were two them. I bought the converter for the smaller cable and the adapter to make the two one but did not notice an improvement in reception.
You shouldn't need one. When I replaced my stereo last May there was only one antenna wire.
My guess is that both of the in-glass antennae go to an amplifier and then a single cable goes to the stereo.
Mine works fine on both AM and FM with the single cable.
Depends on how you wire it, lol. You'd basically just be interrupting the wire that signals the camera to come on, and then selecting between the two signals (reverse or accessory).
stole this photo from the internet (sorry to whomever it belongs to), but basically this is what I did:
![]()