I recently got a sunkamper pop up truck camper and the interior lights don't work and the po didn't use them. the 1993 manual on here doesn't match up well. Mine has a power panel with an ac breaker and a couple of fuses and a battery/converter switch. it also has no battery. i am trying to get the lights working and in the process i may have to install a battery or a converter of some sort. it also has another steel box with some wires and fuses but none seem to go to the lights. the wires coming out of the conv/batt switch are 2 white , grey and red. any help or wiring drawings is appreciated. thanks