78 turn signal problems
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New User
Joined: Dec 2017
Posts: 2
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78 turn signal problems
I just put a new turn signal switch in. I have left turn signals but no right. The rear right will light up but not flash. The right front doesn't even illuminate. Put new bulb still nothing. Please help
Logistics Pro
Joined: Jul 2005
Posts: 4,217
Likes: 154
Make sure that the front socket is good. Verify voltage there. And make sure that there's a ground wire to the body/frame/rad support, coming from the lighting harness at all four corners. Are the indicators in your dash cluster working?
Elder User
Joined: Feb 2004
Posts: 893
Likes: 5
x2 on what meangreen said.
Check the contacts within the sockets. None of my Bronco's side markers would light up when I got it. I cleaned the left front and it came on. I cleaned the left rear and it came on. After I cleaned those two suddenly the right side started working. Be thorough!
Check the contacts within the sockets. None of my Bronco's side markers would light up when I got it. I cleaned the left front and it came on. I cleaned the left rear and it came on. After I cleaned those two suddenly the right side started working. Be thorough!
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
Be sure to check ground continuity THROUGH the sockets. Once I had great grounds at the sheet metal, juice to all the appropriate spots...and flaky lights - till I determined I had defective ground wire connections in the sockets. The front socket was easy to replace via Dorman, the rear I had to cut open along the side and resolder the ground wire to its tab. No issues now.
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