Well first off make sure you don't have the lights turned on at the light switch. Then check the door switches, replace if any are bad. If the door switchs are working ok, check the fuse block for corrosion, unplug and re-install the fuses and brakers if this does help then check the light switch it's self.
My Carbon foot print is 57 tons per year, and that doesn't count my fart gas.
I spend my carbon offset money on my 1995 F150 Flareside with a carbon spewing 5.0L V8.