[MPTitan06]

Jan, I had that same problem with my left signal, it would work and then wouldn't. I changed the bulb and had same results. I found the wire had gotten pinched just inside the fairing under the rubber boot. I pushed the mirror housing forward, removed the boot and moved the wires to un-kink them and that solved my issue. Haven't had any problems since, hope thats all it is for you.

 

[MPTitan06]

Jan, if you push the mirror housing forward and pull back the boot, you'll see the wire and connector. My wire was bent at the connector, it's been a while and I forgot about the connector as Okie stated. You'll see the wire coming out of the mirror into the fairing, you may have to pull it a bit to get to the connector. I didn't have to pull the mirror.