Plus AND Minus 12v from AC to Thermostat
I have a Dometic A/C and a Dometic single zone thermostat. The thermostat requires plus AND minus 12 volts. The schematic of the A/C control box indicates that the plus AND minus 12v come from the pow...
Forum Discussion
Hiker, as happy2rv posted above we would like to help you solve whatever problem you're encountering, but it's not really clear what problem you are trying to solve.
If you merely seek a simple answer about minus 12 volt. The answer is that - 12 volt is simply ground on the RV. You can get that ground by running a wire to a ground wire of one of the 12 volt accessories. You could run a ground wire to the negative terminal of the converter. You can even run a wire straight back to the negative post of the battery.
if you need more concise help than thins it would be very helpful to us if you can give us a more concise explanation of what you are running into. Include any model numbers of components if available and even what wire colors are used at each end and the labels of the terminals they wires are connected to. Of course a few closeup and in focus pictures of the wire connections of your actual unit will work as well or better than you trying to describe everything,
If you merely seek a simple answer about minus 12 volt. The answer is that - 12 volt is simply ground on the RV. You can get that ground by running a wire to a ground wire of one of the 12 volt accessories. You could run a ground wire to the negative terminal of the converter. You can even run a wire straight back to the negative post of the battery.
if you need more concise help than thins it would be very helpful to us if you can give us a more concise explanation of what you are running into. Include any model numbers of components if available and even what wire colors are used at each end and the labels of the terminals they wires are connected to. Of course a few closeup and in focus pictures of the wire connections of your actual unit will work as well or better than you trying to describe everything,
