Comments follow on my turn signal installation (1951 3600 6 volt). I used a 535 flasher from NAPA (made in China), the flashers were fast, like a bulb was out...not the case though. Also the flasher did not make a perceptible clicking noise even though it is billed as a thermal unit and not one of the newer generation electronic flasher units.
I found a NOS Tung Sol 6V 535 flasher made in the USA on ebay and picked it up for around $15 delivered.
Good news, the flashers now flash at a reasonable rate and its easy to hear the good old fashion Click-a Click-a of old.
So, my advise is to consider something other than the NAPA 535 for your 6 volt flasher needs.
Last edited by moparguy; 02/23/2016 3:49 PM.
