MSD launch

[Mr Brown]

But that’s where my non latching button comes in, emulates the clutch signal?

You'd have to figure out which wire from the harness was that one, and what voltage it needed to see. Then figure out how to make the button emulate that signal. Not saying it can't be done, but it's not gonna be a simple plug and play deal.

[Isonblade]

You'd have to figure out which wire from the harness was that one, and what voltage it needed to see. Then figure out how to make the button emulate that signal. Not saying it can't be done, but it's not gonna be a simple plug and play deal.

I must be missing something, my understanding is the MSD can be triggered by two methods,
Too earth (people often use the clutch switch for this but doesn't have to be)
Or 12v positive in which case you swap 1 wire on the MSD plug.
Neither of these have any input/output/communication with the ecu.

Can anyone confirm either way if I understand correctly?

[Mr Brown]

I must be missing something, my understanding is the MSD can be triggered by two methods,
Too earth (people often use the clutch switch for this but doesn't have to be)
Or 12v positive in which case you swap 1 wire on the MSD plug.
Neither of these have any input/output/communication with the ecu.

Can anyone confirm either way if I understand correctly?

Here's a screenshot of the wiring diagram for the universal version, you can download the manual here:

MSD 4350 Universal Launch Master, Coil-on-Plug 4-Cylinder Engines

It will provide consistent launches and quicker 60-foot times by setting an rpm limit to stage with. Once the green light comes on, release the clutch and take off - but be sure to hold on! The rpm is adjusted with two built-in rotary dials ranging from

www.holley.com

[Isonblade]

Sorry for the belated update, fitted and works fine with aftermarket ecu.

[Isonblade]

Operated by a none latching switch on/in gear lever, I’ve a few YouTube videos from last event if anyone’s interested

[Isonblade]