Wiring for the ignition coil for a 1984 iron duke? (Page 1/2)
snyderman APR 26, 04:29 PM
What is the proper wiring for the ignition coil for a 1984 with the iron duke? There are 4 terminals on the side of the coil. In my case there is one large pink one that goes to the ignition a brown and two blacks. Am I not supposed to have a white wire for the tach to the pick up coil. ? Obviously from the photos, someone has played with this before.



snyderman APR 27, 09:54 AM
Can anybody help me?
AsaBergman APR 27, 10:22 AM
I have an 84, going to go out and look at my wiring now.
AsaBergman APR 27, 10:36 AM
Top left we have the thick orange tanish wire
Top right is black
Bottom right is brown
Bottom left for me is a candy cane red and white wire, this is a replacement tach filter(I believe from Rodney). If you have the stock filter this wire goes to a tiny cylinder found somewhere nearby.

Both right side wires appear to go to the distributor or the wiring for it.

[This message has been edited by AsaBergman (edited 04-27-2021).]

snyderman APR 27, 10:46 AM
Thank you this is helpful.
theogre APR 27, 01:07 PM
⚠️ Warning: Iffy coils and anything on high volt side can destroy ICM and more.

No-one makes "84" coil for years. You have to "upgrade" for 85+ coil w/ newer plug available many places.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

snyderman APR 27, 07:46 PM
Hi Orge

I have one coming from UAP. It is 1984 specific.

What is interesting is that the wire that AsaBergman says he uses for the tach filter (red & white color) – the wire just below the pink wire - goes to ground on my car – not to the tach filter. I traced the supposed Tach wire (white) back from the c500 harness and I found it cut – not connected to anything. Would having this wire go to ground from the coil cause my problem?
Patrick APR 27, 07:53 PM

quote
Originally posted by AsaBergman:

CLICK FOR FULL SIZE



Your coil wiring looks almost as dodgy as mine.

I "temporarily" wired in an aftermarket coil on my '84 years ago, and still haven't done it properly. I'd be too embarrassed to post a picture of the abomination.

[This message has been edited by Patrick (edited 04-27-2021).]

snyderman APR 27, 08:00 PM
Patrick that's not mine. Mine is here. The circled wire goes to ground and I suspect it should go to the tach filter. Am I correct?
Patrick APR 27, 08:04 PM

quote
Originally posted by snyderman:

Patrick that's not mine.



I never suggested it was!