On my truck, the dome light is always hot, with the ground wire connection made when the switch is turned on at the headlight switch.
You could run parallel grounds to each door that complete the ground circuit when opened.
The ground wire from the light would be split to run to the switch and both doors.
"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."
1957 GMC 150
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