On Jun 6, 7:38 pm, "Paul J Lawless" wrote:
Trying to fit this Sony into my caravan, connecting 12 volts to supply does
not power up the unit, is there anything else I need to connect up?

Assuming you have the standard ISO colours the red and yellow going
into the Sony both need 12 volts supply, the black will need to go
down to earth (chassis of the caravan.