Does anyone know if a Faria current triggered tach (tach wired in series with the coil on a point ignition) will work with the Chrysler electronic ignition?

Been a very long time but I think mine would not work with any electronic.

Some info here LINKY

might try GOOGLING
I do know that a commonly sold electronic ignition adapter for a Sun distributor machine is nothing more than an HEI module in an overpriced black box DAMHIK (butthurt)

I don't see why it wouldn't work if you wired it that way. It does add quite a bit of wire to the ignition feed.

At the coil negative, there is little difference between the Chrysler points and Chrysler electronic ignition.
In the first the current is allowed to flow through when the points are closed, in the latter when the solid state switch closes.

On feed side, current is controlled the same way in both. The resistance to flow created by the ballast resistor and coil's primary windings. This varies a little with temeprature and provides a range of current based on conditions.
Transistorized used a 0.5 ohm resistor, and the points systems varied but usually around .6 ohms or so,

HEI has an internal current limiter controlling the flow and my understand is also changes with conditions (rpm), at least in some.

Some info here? Let's see, MSD, HEI, Petronics Flame Thrower III & Igniter III....maybe I missed it but I didn't see anything about a Mopar electronic ignition on this AMC board..... and this is a Mopar board. But maybe I'd have better luck asking this question on an International Harvester forum. What do you think about that?

OK, I'll refrain from trying to help you in the future What do YOU think about that ? BTW there was a bit of info in there that you blew right by

Knock yourself out. Being a smarta@@ with "might try GOOGLING" is help? With the kind of help you provided I am no further ahead than I was before you "helped". So please, carry on.

Wasn't tryin to be a smart --- but rather helpful. I don't have the time to do all the research required to solve your issue. But others have faced it and it appears solvable with effort and research. hence my comment on the sun adapter
But your firing back in the manner you did really was uncalled for. Good luck with your dilemma

Really? When someone sarcastically comments "might try GOOGLING", I'm supposed to just let that go? If you didn't know the answer to a question you have three choices 1) say nothing, 2) say you can't help, 3) relay what you do know about the subject that may be of value. But "might try GOOGLING", with Google in all caps, fits into none of the three.

you seem to be fixed on the "might try GOOGLING" comment blowing by my #3 comments
I do know that a commonly sold electronic ignition adapter for a Sun distributor machine is nothing more than an HEI module in an overpriced black box
And the forum I directed you to did have commentary on the problem you'll likely be facing. I found that by GOOGLING Faria tachometers. It's simple and if you spent as much time GOOGLING the subjetc as you have trying to slam me on the GOOGLING comment you'd likely be further ahead. If you had said you needed further help understanding the electrical part I would've been more than happy to help, but that's not the case sorry you took it as offensive, your issues, not mine

I never heard of a "Faria Tachometer" so googled it. Then googled it for the wiring and found this. Looks like it should work and googling is not a bad thing but i would look up the manufactures info first. That's just me and my $.02

Thanks for some real help. The situation with current actuated tachs is that they depend on the current waveform through the primary lead to the coil. They have few active components in their circuitry, they are basically current transformers with an RC/zener circuit to clip and modify the output into an analog voltage that feeds the meter movement. I know what the waveform for a points ignition looks like but I cannot find what the waveform is for the supply to a Mopar electronic ignition. And I haven't found it after hours of GOOGLING it. The HEI adapter seems to be the best bet at this point.

Faria is commonly found in marine applications, but they make a lot of instruments for other stuff too.. They still exist and still make a crap load of dash gauges. They also offer a rebuild service to recondition older gauges. They have a whole link of technical tuff on their site, including phone numbers.

https://fariabeede.com/2-pages/home.php

Thank you.

I googled it, well actually DDG. First link listed had your waeform.

https://www.forabodiesonly.com/mopa...-pickup-polarity-and-rotor-phase.441771/

Might try honing your googlefu. Phrase I used was "mopar electronic ignition waveform"

I think at this point . Thanks for the help but I already found that. What that covers is the waveform from the distributor pickup, not the waveform in the coil circuit. So while it's interesting, it's not the answer. So I would prefer this thread end now. I'll figure something out.

Those are waveforms showing the secondary voltage.

Current for the tach will be on the coil's primary wiring. I beleive my description of the primary side waveform is essentially correct.

Sorry, I missed your post, got lost in all the noise. Well, you can't hurt one of those tachs unless you pass full voltage to ground through it so if my project comes to pass I'll give it a whirl.

Maybe the OP can google a cheap USB oscope and sort it out himself.