MSD Wiring
#1506790
09/24/13 09:13 AM
09/24/13 09:13 AM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
OP
master
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OP
master
Joined: Jun 2006
Posts: 5,163
CT
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Hey guys, I understand how to wire the MSD box, but my question is are you running your thick power and ground leads directly to the battery per the instructions? I don't like this idea, just looking for ways around this. Why does the box need power when the switch is off? This doesn't cause a drain?
Also, for the secondary power lead, I'm assuming you are running this to the 12V side of the ballast resistor, any trick ways to run this without hacking my harness (new engine harness). I don't particularly like wiring accessories to the 12V side of the ballast either because I burned it up once before.
And lastly, any ideas on bypassing the ballast resistor without hacking the harness?
I have some ideas but just looking for some more.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: MSD Wiring
[Re: GTX MATT]
#1506792
09/24/13 09:49 AM
09/24/13 09:49 AM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,444
Indiana
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My battery has the 8mm hex head screw terminals on the side. I wired my MSD directly to these terminals.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: MSD Wiring
[Re: YO7_A66]
#1506793
09/24/13 10:41 AM
09/24/13 10:41 AM
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Joined: Sep 2005
Posts: 580 North Carolina, USA
Silverbullet2
mopar
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mopar
Joined: Sep 2005
Posts: 580
North Carolina, USA
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Mine is hid inside the car. I ran a 10 gauge wire from the MSD to the battery post on the starter relay.
Oh and when I wired mine up the instructions said NOT to use a ballast resistor. I didn't.
Last edited by Silverbullet2; 09/24/13 10:46 AM.
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Re: MSD Wiring
[Re: GTX MATT]
#1506798
09/24/13 06:14 PM
09/24/13 06:14 PM
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Joined: Aug 2003
Posts: 12,291 Kent, Wa
340SHORTY
Truck Nut
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Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
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You could take the resistor coil out of the ballast and replace it with a good sized wire so everything looks stock.. Carry a spare ballast in the glove box in case of an MSD failure..
I am truckless..
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