Well, a mystery to me. Hopefully not others !

Working on, of all things, a 1974 Ferrari with what looks like an 80s vintage Kenwood radio and graphic equalizer (remember those?).

Anyhow, I ran across this widget in the wring wiring, wrapped in about 10 feet of electrical tape.

What is it?

I have a feeling that I should now....but I don't.




Cheers
DD

 

Well done Doug.

That looks like a very old style noise suppressor, or ":choke" as I remember??? (HAHA on that one).some radio installers used to call them.

I have seen them, back in the '70's, in Peugeot. Citroen, and others.

It has something to do with alternator/generator noise through the +ve power lead.

BUT I COULD BE WAY OFF, AS THE MEMORY IS NOT WHAT IT WAS.

 

I was pondering the same thing, Grant.

There is another noise filter in the wiring, plastic-cased and clearly marked "noise suppressor" but, in thinking about it, I have recollections of some cars using two suppressors back in the day.

I thought this widget was especially weird being wrapped in electrical tape; it has a home-brewed, mad-scientist look to it.

As an aside I'll mention that, after dabbling about on a couple of these old Ferraris, I've concluded that the Jag guys and the prancing horse guys must've been cousins. The "lay-of-the-land" is similar in many respects

Cheers
DD

 

Agreed.

A few years ago a mate asked me to "look at" his 1972 DS21 Fuel Injected Citroen, not running. Uses the Bosch D Jetronic EFI system, same as our PreHE stuff.

Strange car, in a quirky way, but NO injector pulse, sounds familiar.

Theirs is SO simple. A cassette slides into the Bosch distributor, below the Ignition points plate, and contains 2 sets of contacts, that operate on a lower cam on the shaft, and that triggers the EFI system. He had oiled the shaft, and a drop must have gone down through and was sitting on one of these contact points. Sprayed it off, refitted the cassette, started right up.

He wanted me to sort the electric/hydraulic pre-select gear change, HAHAHAHA, a V12 rats nest is SIMPLE compared to that fiasco. Never got it spot on, but it worked enough to drive it, and he never asked anymore.