Truck Camper interior lights

[Caseylikesmotor]

So I bought a camperette for my Ford f150.
This thing has no badging or anything for me to get trouble shooting from a manufacturer, etc.

So basically I trusted the gentleman who sold it to me, and he stated all lights work, in and out.

The camper inside has NO converter or fuse box or anything that I can find.

I have the camper plugged into a 7 prong adapter into a 4 pin on my truck.

All exterior lights work but the interior dome lights do not.

There is also a 3 prong male end that hangs outside that is supposed to run the lights from my home. My questions are

1. I thought I needed a breaker or inverter to run these lights (he says they should run off my truck battery as is)

And 2.
If I don't need the above inverter or fuses, why won't the interior lights work but all of the exterior lights work?

This is clearly a ubuilt camper.


Thank you in advance for any help.

[corvettekent]

The seven pin plug needs to be plugged into a seven pin plug on your truck to get power for the interior light. You are using an adapter that does not have a 12 volt power wire.

[rk911]

first thought...check the bulbs.