yup look for that one, this guy knows his stuff about turn signal
Originally Posted by bidwell
The coil either has continuity or not = good/bad. The flashing is caused by a bimetal strip that gets warm from resistance and moves the contact away breaking the circuit. This "strip" is matched to the resistance of the stop bulb's filament for a medium flash rate. Since one side flashes medium, there must be a problem with the other side's bulb or wiring resistance.