I have just fitted a new double din head unit to my Autotrail Cherokee. The Ducattos doesn't have an ACC stop on the ignition switch.
As I understand it and I'm happy to be corrected, the yellow wire is a constantly fed wire to keep the memory of the head unit and draws very very low current and the red wire is the power delivery to run the unit.
The problem comes when I want the head unit on when the MH key is out. As there is no ACC stop on the ignition as soon as the engine is stopped the head power is cut.
The obvious solution seems to be to join the red and yellow wires but I'm told this will keep the head unit in a standby state and quickly drain the battery.
The only other way I can see of solving this is to put a switched live from a permanently live source to provide power when the key is out.
Is there a better way?
As I understand it and I'm happy to be corrected, the yellow wire is a constantly fed wire to keep the memory of the head unit and draws very very low current and the red wire is the power delivery to run the unit.
The problem comes when I want the head unit on when the MH key is out. As there is no ACC stop on the ignition as soon as the engine is stopped the head power is cut.
The obvious solution seems to be to join the red and yellow wires but I'm told this will keep the head unit in a standby state and quickly drain the battery.
The only other way I can see of solving this is to put a switched live from a permanently live source to provide power when the key is out.
Is there a better way?