Re: 1956 Clipper Turn signal flasher

Posted by HH56 On 2021/9/20 14:28:52

I am not familiar with anyone else who might be using the NAPA 12v flasher replacement on a negative ground car but I can speak from experience - both mine and others on the forum - the 6v NAPA universal replacement listed for the 51-4 models will not work the indicator lights on Packards with positive ground.

That particular 6v flasher has a regular thermal section to work the outside bulbs which do work well but has a transistor to work the indicator bulbs and the transistor is the wrong type for positive ground cars. Perhaps the NAPA 12v unit also has a transistor for the indicator bulbs and while it might be the correct polarity, might not have the correct operating characteristics for incandescent indicator bulbs. When you say "behave oddly" what are they doing and do the outside bulbs work properly?

There is a cross that another poster found -- the Novita EL13 sold by O'Reilly and Amazon -- that apparently will work but I have not personally tried it.