BTM install

[CrazyS13]

Whats up guys. I have a universal msd BTM, but i dont know where to intercept the trigger signal to the ecu. I have it narrowed down to either the 1* or the 180* signal wires off the CAS. any info is greatly appreciated.

My ignition is the stock 1990 sohc igntion system.

-John

[skatanic28]

hi, i just picked up one of these as well so im still shaky on a few parts of the install, but i may be able to help you out a bit. i think that the trigger signal is supposed to come from between the ignition coil and power transistor. on the s14 this requires you to open up the distributor and modify it, but i believe you have an external coil, so maybe this would be a bit easier? did you get the msd tach adapter as well?

[orion::S14]

Search the JWT website tech section, they have instructions on how to modify the S14 KA distributor.

Not to install a BTM, but it will lead you in the right direction.

- Brian

[CrazyS13]

I dont think 240's need the tach adapter, at least for s14's, so correct me if im wrong.