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Finding a few NEW TS flashers and determining if they are good or not, I was switching the new flasher into the TS flasher circuit to check the operation....My current flasher clicks loud and energizes the TS bulbs and the dash indicators. The new flashers are store bought 4/5 months ago and indicate China as their birth place. When installed the following observations are: Exterior turn signal bulbs front and rear work, no audible click from the flasher when operating and the dash indicators don't work. I have 2 Packard's and the new flashers operate the exterior lights but do not click or operate the dash indicators in either cars.
Does anybody have/had a similar issue with "modern" made flashers?

The "click" you normally hear is from the electo\mechanical contact in the flasher relay opening and closing. Some modern ones are solid state and do not have mechanical contacts. The dash indicators not working could be either a difference in the relay pinout or that they don't pull enough current to actuate.

If you want the "click" I would find the correct old style relay.

The issue with the new "modern" flasher replacements such as the 535 is they use a thermally controlled bimetal contact to power the TS bulbs and a transistor to turn on the dash indicator whereas the original TungSol type has electromechanical relay like contacts for both functions. Almost all of the modern 6v replacement flashers use transistors that are for negative ground cars so dash lights don't work on positive ground cars. There are a few positive ground flashers available if you search for them.

Another poster (stupid me forgot to copy his name for credit so if he reads this please advise) opened his commonly available 535 and replaced the original transistor with one of proper polarity to work on positive ground cars.

Here is info on a typical old TungSol type and the modern type flashers along with the posters info on the replacement transistor.

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