Hey all, I just brought home my new-to-me '08 S40.
I checked all the lights the first time I looked at the bike and again today before making the purchase and they all worked.
The seller and I noticed the right rear turn signal light was loose so he grabbed an allen wrench and tightened it up.  On the ride home, I noticed the right turn signals weren't working.
When I got home, I contacted the seller and asked if he had any problem with the turn signals in the past and he stated the guy that does his work fixed something because "there was an electrical contact issue".  Wish he would have divulged that but it's my problem now.  No big deal, I hope.

I just loosened the allen screw on the right rear a little and then the light worked so I decided to pull it off and check it out.  It seems like the wire that comes out of the rear fender just runs up inside the blinker housing and the screw makes contact to complete the circuit?  Is that the case?

I checked the left side blinker and it has a phillips head screw so something has definitely been messed with.
I can't get any more wire out on the right side so it looks like I'll need to pull off the chrome side pieces that run along the fender and also hold the sissy bar on.

I just wanted to post this for any help, advice or guidance before I dig in there tomorrow.

Other than that, the front brake squeaks more than I can tolerate so I'll need to deal with that and the bike backfired a couple times on the ride home.  Only when decelerating from highway speed to a stop without gradually letting the throttle off.  It pops when I let the throttle all the way off from speed rather than gradually letting it off. Also, I'm gonna hafta do the mod where you lift the front of the seat.  With that big hump in the seat, I can't slide back and get comfortable like I can on my scooter.  I'm not too big for the bike; just shy of 5'10" and about 180#

Thanks in advance for any help with the blinker issue or comments on the brake squeak or backfiring.  I'll be trying to search the forum for those pearls.

That Allen head screw rubbed through the insulation on the signal wire. Screwing it tight grounds the wire out. Take out the screw, squirt in some silicone and let it dry. Replace that screw with a shorter one, end of issue.

The circuit is there as soon as you plug the signal in. The screw is only supposed to snug the light assembly tight to the support rail. When you bottom the screw out and the light goes out, it means current is not going to the bulb, it is grounding out. Not good.

The lights on our bikes are stand alone units, they have power and ground wires built in. You could set it on the seat and turn the key, as long as the light is plugged in under the seat, it will glow.