westend wrote:

If you have a Standard 7 pin RV connector, check the vehicle-side pin "green" for power when the headlight switch is turned on.
You can do this with your new handheld multimeter that you've purchased. BTW, Harbor Freight sells a handy, small multimeter for around $4. If you are not near a Harbor FReight store, most hardware and big box stores also sell the multimeters. It is something that every owner of an RV should have onboard.
Good luck with your lights.
That photo is very helpful!! The only two that are showing any reading are the top right and bottom right (taillights and ground). The rest are zero. Its 7 blade configuration.
:?