Talking about a 07 Electra Glide Classic.
I was riding on Sunday and my right rear turn signal bulb go out. I replaced the bulb with a new bulb and they worked fine for about an hour, then my red key light came on. So I did some searching and found how to pull the codes which I did and came up with B1121 only. So I replaced ALL four bulbs front and rear with new bulbs. My right signal works fine but when I hit the left signal it throws the light back on after clearing the code and the left signal does not work. I am confused as all of the connections at the bulbs are good and they are new bulbs that I looked at before I installed to be sure.

Please help I have no idea what else to look at..

 

Now the left signal is working but only in the rear and not the front? When I use it the signal starts off normal them speeds up. Also noticed this am that the front left running light is brighter than the right, hmmm maybe a bad bulb? So used to the old bike that didn't have any electronics or diag codes lol

 

anything LED in this mix?

 

if no LEDS in the mix then I would be looking for a shorted ground wire at one of the locations. But before you start with all of that, just for grins, unplug your turn signal module and check the pins inside that connector for corrosion. Put a little dielectric grease in the connector and put it back together then check your lights again.

 

Nope no LED's. Where would I locate the turn signal module, under the seat? I just purchased this bike and am used to my old 84 softail so sorry for the stupid questions, never even had turn signals before .

 

Found info on here that it is under the seat. Gonna try and clean up the connection and put back together to see what happens. Also put a lowering kit on it last week so I can flat foot the ground and hit a pretty big bump with a passenger, so also gonna look for any damaged wires under the fender as well.

 

Ok found the problem!!!! It was the plug under the seat that goes to the rear lights. It was loose and kept losing connection when I would hit bumps. Actually heard it click when I pushed it together. Thanks for your help everyone! Motor on!!!

 

great news!