The backup lights and rear side markers for a 94 Mustang are not working. on 1994 Ford Mustang

I have replaced all the bulbs and checked the fuses. Should I start with the wiring next?

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2 answers 1 comment
ck for pwr at all sockets then ck to see if u have good grounds
Are tail lights,tag lights trunk light working?
Yep, the wires prob.broken inside of trunk area.Look for exposed places where stuff in the trunk could have
hit the harness.