msd distributor

[allrad]

have a 1975 chief cherokee with 401 engine
msd ignition. my distributor fell apart internally. so i bought a new one. this time a msd distributor.i have different wire connection now.i dont use the white wire anymore instead i use the green and violet direct to the distributor as msd required.
truck wont start. i was checking for spark acording to msd. if i ground out the white wire i have a spark. if i ground out green and violet i doknt have anything. so is my box bad?

[Kris]

Just had to go out and look...
It sounds like you have it wired correctly.
The white wire is no longer used.
Grounding (or shorting) the green/violet wires will not tell you if it is working or not, these wires transmit an inductive pulse.
Check the connections on the factory extension (green/violet) from the box to the distributor.
In fact, check all the connections in the system. Mine stranded me after a few months so I soldered everything, no problems since.

Their tech support is ok, if it still doesnt work give them a call. If you are getting spark with the white wire test, the box should be fine.
smile.gif
kris