72 C20 Blinker problems

[Caleb176]

Please help I can't figure this out my drivers side blinker and park light works as it should my passenger the park light does but no blinker or marker. The tail lights and blinkers work perfect both sides just the front passenger
I have checked all the wiring in the front of truck I have power to the marker but no ground and no power to blinker where should I start everything worked great before tear down now truck is back from paint and all assembled and this problem any help please