• Welcome to the Checkmate Community Forums forums.

    You are currently viewing our boards as a guest which gives you limited access to view most discussions, articles and access to our other FREE features.
    By joining our free community you will be able to:

    » Interact with over 10,000 Checkmate Fanatics from around the world!
    » Post topics and messages
    » Post and view photos
    » Communicate privately with other members
    » Access our extensive gallery of old Checkmate brochures located in our Media Gallery
    » Browse the various pictures in our Checkmate photo gallery

    Registration is fast, simple and absolutely free so please, join our community today!

    If you have any problems with the registration process or your account login, please contact support by clicking here or by using the"contact us" link at the bottom of the page.

MSD Ignition question

lt133

lt133

Member
I'm running a MSD 6M-2 ignitoin w/the MSD Pro Billet Distributor (PN 8560) on my new 502. I ran this same ignition setup on my previous 454. My question concerns the power line for the ignition box. MSD calls for the red power wire to be connected directly to the battery which is the way I ran it on my old setup (never had any problems). I've been hearing different opinions on how this should be wired. Can I wire this power source to my battery switch? (I'm running two batteries w/switch) so that power is completely shut off to the ignition box when I don't need it (I'm not sure if the box is drawing anything from the batteries even when the motor is off) or should I just leave it connected directly to one of the batteries? Any thoughts , opinions or suggestions are welcome!! Also, my current choice for plugs are the NGK BPR6SF @ .045. I haven't even been able to run the motor yet but from what I've been reading these should be my best bet, again I'm wide open for suggestions. Thanks.
 
Bob,

Definetly run the power for your MSD through the battery switch. That switch should shut down the entire electrical system. Use an 8 guage fused wire. MSD recommends 10 amps for every 1000 rpm of intended running. So, if you plan on running in the mid 5000 rpm range, use a 60 amp fuse. Those plugs are not what I would recommend. They are a resistor plug, you dont need that. I use these NGK-5238 . They are a race plug, non-resistor. I think they are a better choice. The plugs I run wont fit your stock heads, so I would suggest you search for the heat range you want in a non-resistor race series NGK plug.

Vinny
 
Thanks Vinny,

I have to believe there is some type of draw even if the ignition is off, however slight. I'll wire it to the battery switch.
 
There is no draw. That battery positive lead powers the box, but the ignition lead turns it on. There is no electrical draw unless the ignition is turned on.
 
Vinnie!


So what happens if you are wired strait to the battery. Is that bad? (ok I confess mine is wired strait to it)
 
either process is correct... msd wants good clean power to the box. now the size of the wire to the box will change depending on how far your batteries are away from it.. or better termed. how long a wire you run to the battery switch.. in this instance you should be good for at least 15 feet. at the same size wire as is on the 6al.... no speaker wire or cheap connectors
 
Thanks for the help. I've run the 12 ga wire from the box to the battery switch (run of only about 3 1/2-4 feet) and the negative directly to the battery (again only about 3 feet). Switch is fused and everything should be fine (I hope).
 
You must log in or register to reply here.
Back
Top