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

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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
(2) Answers
Ground circuit problem. You have gone about as far as a DIYer should go, get a car savvy(er) buddy or mechanic to help.
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