BTM help

[bobtodd]

I just got my BTM. I need to know where to connect the white wire to. The diagram that I got off of MSD's website says the white wire from the BTM goes to the "points or electronic ignition amplifier(original coil wire)". What wire would that be? I have the 6A MSD box and an MSD Blaster coil...if it makes any difference when hooking the btm up. Any help would be great! Thanks.

[bobtodd]

One other thing. There is a grey and a black wire coming out of the btm for the dial. Which one connects to which as far as the green/purple wires that come out of the dial?

[Greg@GLD]

You should have had a connector that just plugs in between the coil and the harness. Hold ona sec, let me see what I can find. Is this the MSD/Vortech BTM?

Back in a sec...

[bobtodd]

MSD-8762

It's not a blue Vortech model but I'm thinking they are the same thing. It's got a red, balck, white, and yellow wire coming from it. I dont have stock ignition or a stock coil.

[Greg@GLD]

Image too large to display, please click:

http://www.mach1media.org/images/btminstall.jpg

[Greg@GLD]

hmm... I didn't see your last reply before I posted the diagram.. no yellow wire on this one...

[bobtodd]

What all does a BTM need to retard the timing? Obviously you have the vacuum line hooked up. YOu've got the red/12v, black/ground. Yellow wire goes to the white wire on the MSD ignition box. I guess I dont understand where the white wire is needing to go. The instructions/diagram say it goes to the "points or electronic ignition amplifier(original coil wire)".

[Greg@GLD]

That white wire is key- it intercepts the signal from the EEC. By changing the value of the output, it changes timing.

[bobtodd]

Now to figure out where it goes.....

I guess I could call MSD.

[Greg@GLD]

Look at the diagram I posted- tomorrow I can peel back the harness and see which side it goes to on the coil primary, this should not be too hard..

[bobtodd]

So it would connect to one of the sides of the coil? I think I have the Blaster 3 coil.

[Greg@GLD]

I have a blaster coil also... Hold on, running out to the garage for a moment...

[Greg@GLD]

Mine has a white wire coming off the MSD to the coil harness, the white wire on the BTM connects to the white wire in the MSD6A...

[bobtodd]

lol....hmmm. The digram from MSD showed the yellow wire going to the white wire on the MSD. Any idea what the white wire from the MSD is for?

[Greg@GLD]

Call MSD tech, I don't want to cause you to short out your MSD6.. :thud: