Reply With QuoteWith that box, the only thing the wire from the ignition switch does is turn the box "ON". All power to actually run the ignition comes from the heavy red wire which gets connected to a full time B+ source.
You do not need a relay.
I want to confirm that what I want to do is correct:
Need to wire my MSD digital 6 ignition. In my research I came across some posts that indicated running power from the battery to the switch and then back to the ignition box would result in voltage drop and is bad for the ignition. True?
If so, would it be better to run the ignition wire(post switch)back to a relay, and use that to control power to the ignition box from a the same power source but before it gets to the battery switch? I could T off after the breaker...Does that make sense?
If so, what kind of relay do I need, and where do I get it? If not, please help!
With that box, the only thing the wire from the ignition switch does is turn the box "ON". All power to actually run the ignition comes from the heavy red wire which gets connected to a full time B+ source.
You do not need a relay.
Guess I should have researched it a little more! thanks Oldsquirt!
Just be sure your B- wire goes to the battery cable attachment to the block. MSD boxes are very ground sesitive. (I know, I have smoked them before from poor grounding)
Thanks for the heads up. I've read about the problems so I will make sure my grounds are solid.
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