OK, since you have an MSD ignition box, where did you run your power leads? I have the black grounded and the red going to the fuse block (little red box on the passenger side). I talked to MSD tech and they said the black should go to the negative battery terminal. What do you think?

 

I am sure that MSD box is not that powerful device with extra-low resistenace inside to hook it directly to battery. No any electrical noise from it too. It doesn't heat at all while working. That's why I connected black simply to a ground and red through a 20 amp fuse, which is also feeding mine inline pump. Works nice

 

thats fine. you can ground it any place on the car really it doesnt matter. they are all tied together, just as long as you have a good ground. Dont make more work for yourself, use the closest place.

 

Good, thats what I was thinking.

 

little risky running it together with a fuel pump. the msd draws 1 amp for every 1k rpm. figure 7 amps is the max an lt1 can give it, that leaves you 13 for the FP. Id rather have it on a seperate fuse.

 

You right. That was actually an easiest way to hook it up for me I'd probably pull out this pump at all, no need in it. Pump and MSD box have something in common though - if on of them fails - same result

 

I ran my ground to the neg. battery terminal...No brainer

 

Do any of you guys have your MSD boxes mounted inside the car? Or are they all in the engine bay?

 

Been running mine in the engine bay, and also have had the positive side to the fuse box and grounded to the body somewhere around there for years... Been running fine with no problems...

 

I hooked my MSD 6A and coil up about 2 weeks ago, red to battery, black to body, with the harness that you can buy from MSD, but every time I'm at WOT, you can hear a very defined tick, tick, tick coming from the box. To my knowledge, that is not supposed to happen, and doesn't on any of my friend's cars, or the previous car I had. Any ideas?

 

I have the same wiring as you and I can hear the ticking sound you describe as well. I have talked to MSD tech support and they said that the ticking is normal. I am guessing that you have your box inside the car, and thats why you can hear it. Mine is inside as well. The tech that I talked to suggested hooking the black lead to the battery as well (as opposed to ground) but that didn't make much sense to me. The guy I talked to didn't seem very bright, so I'll probably call again.

 

As long as the ground is good then it fine easy to check with a dvom.

Has anyone ever used the 2 step for the 6al on a LT1?
And what did you use for a switch?

 

im using the clutch pedal as the switch for my 2step.

 

What would be the proper procedure to check ground or anythign else using a multimeter?

 

yea the OHM setting and checking the resistance to ground and make sure there isnt any.

Being its for your ignition I would skimp on this at all.


DVOM digital volt ohm meter