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Posted by: McMark Apr 3 2014, 11:04 PM

Spent way too long troubleshooting an odd flasher problem today. Everything worked fine, but when the eBrake was on it would buzz instead of flash. Checked all the wires, lights, switches and it had a new flasher unit installed. Tried a different new flasher unit from my 71 where it works just fine. Nothing made any difference. Until I got an old flasher unit from a 75 and installed it. Now everything works fine.

Anyone know of a difference? The PET shows two versions, early and late, BUT the part numbers are the same.

Posted by: balljoint Apr 3 2014, 11:08 PM

There are some good examples of young and old flashers in the sandbox.

Posted by: balljoint Apr 3 2014, 11:09 PM

PM received. Never mind.

Posted by: McMark Apr 3 2014, 11:14 PM

After some more research, it seems flasher relays were the same on 914 and 911 from 1969-1984.

Posted by: boxsterfan Apr 3 2014, 11:30 PM

Perhaps a broken doofilator?

Posted by: eitnurg Apr 4 2014, 01:04 AM

See this thread on Pelican

http://forums.pelicanparts.com/porsche-914-914-6-technical-forum/544088-diode.html#post5366907

Posted by: r_towle Apr 4 2014, 08:46 AM

Have you looked at the bulb difference between the years?

From what I recall a flasher is a switch that gets heated up and then switches.
The heat is based upon whatever draw is on that circuit, so maybe the draw is different from one year to the next.

Also, I don't recall a flashing light for the ebrake on my early cars, but I do know it exists on the later models....

That does not mean its supposed to be there and I just don't have it....cause I find it annoying.

The later cars had it hooked into the seat belt system also...so that flasher may do many things....

rich

Posted by: rick 918-S Apr 4 2014, 08:53 AM

Maybe a poor female connection. You messed with it long enough to accidentally fix it? Weird...

Posted by: r_towle Apr 4 2014, 09:03 AM

QUOTE(rick 918-S @ Apr 4 2014, 10:53 AM)