How to wire a manual switch for backup camera
I would like to add a manual activation switch for the backup camera already connected to an Xovision XOD1760BT in-dash monitor. A couple of years ago I upgraded my motorhome with an Xovision XOD17...
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For the head unit, an SPST switch to the run circuit would work only if you also remove the wire from the reverse circuit on the chassis; otherwise, you'd be back-feeding the reverse circuit as well as turning on the camera display, which at the least would probably turn on the reverse lights when not backing up but might also cause the transmission or its computer difficulties. An SPDT switch would allow you to select between the current mode and always on.
bgum (and I in my previous post) allude to the camera's wiring, separate from the control signal to the head unit. It's not uncommon for the camera's power to be wired into the reverse light circuit, in which case activating the head unit when you aren't in reverse will switch its display to the camera input, but there will be no signal there to display when you aren't in reverse. Switching the power source for the camera to something else (like the tail light circuit) is the solution if that's the case.
bgum (and I in my previous post) allude to the camera's wiring, separate from the control signal to the head unit. It's not uncommon for the camera's power to be wired into the reverse light circuit, in which case activating the head unit when you aren't in reverse will switch its display to the camera input, but there will be no signal there to display when you aren't in reverse. Switching the power source for the camera to something else (like the tail light circuit) is the solution if that's the case.
