What's the function of ... • The Dodge Challenger Message Board

by **Hans (72challenger)** » 30 Dec 2002 21:01

While I'm busy replacing the wiring in the engine compartment I was wondering what the funcion & name is of the next thing.

It's a metal, cylinder formed thing (1/2" in diameter x 1.5") that's connected to the firewall with only one wire which leads to the positive side of the coil. What does it do? The ignition also works without it.

by **Graham Shortreed (Transma** » 31 Dec 2002 1:30

Hans. It might be a radio suppressor to cut out igniton noise in the radio.

by **Jens (Jj)** » 31 Dec 2002 8:30

Hans, this is not an original part of your car. My car does not have a piece like this at the firewall. I believe what Graham says is right.

by **Hans (72challenger)** » 31 Dec 2002 10:17

Then there's mothing to worry about when I loosen the thing. The less wiring & non-functional parts the better! Thanks guys.

by **Ted S (Teds)** » 31 Dec 2002 20:01

my 70 and 74 both have this part

by **Hans (72challenger)** » 31 Dec 2002 20:10

Hmmm, quess I better leave it there till we're sure about what it is and what it's for. As soon as I have acces to a digital cam I will post a pic for the others.

by **Jack T (Jackt)** » 31 Dec 2002 21:34

What color wire is attached to it?

(Message edited by jackt on December 31, 2002)

by **Nick (74chall)** » 31 Dec 2002 23:53

It's probbaly a condenser for the radio. I put one on my car , it should only have one wire. Hope this helps.

by **Hans (72challenger)** » 01 Jan 2003 11:27

It has one black wire Jack. But I just leave it; even it's for the radio cause I do have a very bad FM recieve. Thanks all!

by **Graham Shortreed (Transma** » 05 Jan 2003 15:16

Hans I have the difinitive answer to your question. In my original post, I thought it was a capacitor to help eliminate radio interferance. My guess was correct. According to the 1973 Dodge chassis manual, on page 8-76, Chrysler used 3 capacitors to supress engine and voltage limiter interferance. They were as follows
In the alternator
On the back of the instrument cluster
and lastly the one on the coil, with the lead connected to the positive primary terminal of the coil.

by **Hans (72challenger)** » 05 Jan 2003 15:33

Well done Graham, thank you!

by **Jens (Jj)** » 07 Jan 2003 21:10

Hans, my car is a radio delete car. So this could be the reason why my car has not this part.

Jens