LED rear tail lights will not work with LED flasher?
 

I am trying to get my new LED tail lights to work with no success. The LED's would work with flasher that was in the truck. But they were real slow and would finally quit after 10 seconds or so.
I bought a Grote 44891 LED flasher and ran the wire coming out of flasher to a ground like it was supposed to be. I can't get it to do nothing at all when blinker is on. The old flasher that was pluged in to the fuse block has to be wiggled around to work. I think the spade terminals that hold flasher in the fuse block are kinda worn and not holding/connecting flasher terminals. Could that be my problem (loose connection) or could I have a bad new LED relay? How could I check the relay?

Re: LED rear tail lights will not work with LED flasher?
 

I had the same issue with mine, Had to make some small wire jumpers as the flashers are polarity specific. Basically had to flip the wires around if that makes sense? Need two wires with a male spade on one end and a female on the other of each wire. Then plug into fuse box and then plug into the flasher prongs

Re: LED rear tail lights will not work with LED flasher?
 

You may have to play with the polarity like bigbad said. It also looks like you have some corrosion in one of the terminals of the fuse box.

Re: LED rear tail lights will not work with LED flasher?
 

Thanks, I will try that. I my have to dig into the wiring harness to find wires going to flasher and put new terminal on because of the corrosion.

Re: LED rear tail lights will not work with LED flasher?
 

You also should have two flashers in the truck. 1 for turn signals 1 for emergency flashers. Make sure you replaced the right one. I would replace both myself. Mine came with a polarity piece that swapped them. :chevy:

Re: LED rear tail lights will not work with LED flasher?
 

Thanks that fixed it. But now the bottom verticle terminal on fuse block that holds the flasher is loose and correded. It is not holding the male spade wire terminal enough to make lights work. What color wire would that be in the harness? I am going to dig into the harness and find the 2 wires going to the flasher. Then crimp terminals on them and do away with the ones on the block. Please help.

Re: LED rear tail lights will not work with LED flasher?
 

cut down a nail file the kind a woman uses , to clean the contact area (they do make specialty tools for this) . then take a small strait screwdriver and squish the terminal back together enough to be tight again and use dielectric grease to keep the corrosion at bay

Re: LED rear tail lights will not work with LED flasher?
 

Take the screw out of the fuse block and clean the terminal up then reinstall it and make sure the connector is tight.:chevy: