right rear signal not working. fast flasher but when changed nothing works atal on 1990 Toyota Pickup

every bulb changed, even swapped complete light from left to right. has no backup lights. can be cause? manual trans. when flasher is changed I get absolutely no lights at all. cleaned all sockets and checked grounds. really need help

by in Clearwater, FL on September 10, 2013
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2 answers
ANSWER by , September 10, 2013
poss bad bulb socket
ANSWER by , September 10, 2013
Ground circuit problem. You have gone about as far as a DIYer should go, get a car savvy(er) buddy or mechanic to help.