I wired up my BTM (standalone, no other MSD or ignition products) and the car seems to run fine. However, I'm unsure that the **** is hooked up correctly.

Coming from the **** is a purple wire and a green wire. According to MSD those two wires go to the Grey and Black wire coming out of the MSD box.

My question ... Does the purple wire connect to the grey or black? Mine came with a cut harness so there are no longer connectors.

Also is there a way to test this BTM to see that it actually works?

Thanks