MSD and positive 12v ground

[maok]

Has anyone done this with MSD 5520 ignition box on a 12volt positive ground setup.

What I was thinking is that;

Main power (heavy red) is grounded
Main ground (heavy black)goes to -ve power from battery.
Small red to switched ground.

And Orange to +ve of coil
    Black to -ve of coil
    White to Distributor points.

Would the above setup work without any issues?

Edited October 10, 2016 by maok
spelling error

[maok]

Any takers?

[chopt50wgn]

I've run MSD 6A boxes in both of my cars. I don't think any of them were made for positive grounds. You may be asking for lots of smoke and possibly fire if you do this. I would talk with MSD before you try this.