help with c104 connector

[mikegar]

im swapping from mototronics 1.0 to 1.3 and im having trouble figuring out what to do with the c104 connector. any help would be appreciated.

[mikegar]

nvm searched a little more found my own answer.
yellow purple wire connect to pin 8 on c101
green wire connect directly to the positive terminal on the coil
black wire connect to pin 9 on the c101

[jlevie]

What to do about C104 is totally determined by what car you have. If the car has a C104 (up to 8/87) and you are swapping in a later engine harness that lacks C104, you need to modify the harness to add a C104 connector. If you have a late car that lacks C104 you need to use a late engine harness.

Do not connect the tach signal to the coil. The tach signal from the DME is a 0-5 square wave and the higher voltage from the coil may fry the tach.

[mikegar]

i have an 87 with the c104. so dont connect the green/tach wire(body side) to the coil. on the later harness(89 i believe) will the green wire from the 3 wire harness be the tach signal i need?