your Reinstalling HEI, then it should be prewired up, but if not here it goes,
the distributer should have a clip on it, that clip will plug into the base of the HEI cap, in the cap there should be a small metal tab that will be the ground, it will run to the center of the 3 pins for the clip. the ground strap is grounded to the distributer internally by the screw that holds the coil onto the cap. that takes care of the ground. now once the distributer is in , and you have plugged in the plug to the distributer cap there should only be 2 left to deal with , on the cap it will say BAT and TACH , if you have a tach this is where it plugs in at, on the BAT side, use a 10 or 12G spade clip on a piece of 12G wire (preferably non stranded wire) that goes to the firewalls resistance wire that comes out near the firewall on the drivers side. (or any wire that is only hot when the key is on. after all is hooked up, start it up.
remembering if you did not set your distributer in correctly on #1 TDC when you marked your cap you could be in for a day of fun repositioning it and remarking all your wires...
I just did my 67 R/S with HEI , you can check out the pics in the engines section on my website, it may shed some more light as to what I just said.
the address is www.geocities.com/macphreak4evr
its like th2 2nd and 3rd pic down, I pulled the BAT wire up for you to see (the big thick red one)
Good Luck, hope this helps.
[This message has been edited by Chris Edwards (edited 03-18-2000).]