I have 2 different trafficator arms on my '48 Jaguar MK IV. The SF 35 CE has 2 electrical connections and after cleaning is working fine. The SF55L has 3 connections and is not working. The solenoid draws current but will not raise the arm. If I physically raise it to light the lamp I get lots of smoke. There appears to be insulation missing around the lift mechanism but I am not sure if it should be on both sides and the back. I would like an idea of what the wiring should look like. Is the +ve to the bulb going through the whole lift mechanism? Any suggestions for a source of information? Most likely these are not Jaguar specific trafficators.