Good move. An HEI is indeed a single wire hook-up. BUT- that wire MUST be at least 12 gauge and 10 gauge is better. At the firewall bulkhead connector the resistor wire [black/silvery threads] will not work. You can either pull the connector and re-pin it for a heavier wire, or cut and splice it as close as you can. Or, run a dedicated ignition wire from inside through the firewall somewhere. Getting at the bulkhead connector is a chore and really should be done with the fender off. For now, just to get it running, wire the HEI straight to the battery with a 20 amp inline fuse and an ON/OFF switch. You can wire it properly later. On the HEI there is a squarish part sticking out of the cap. Underneath there are five male terminals. Three closest to cap go to the module that is inside. That will have a three wire connector and should come already hooked up. Then the two left are for the 12 volt power and the tachometer. The 12 volt 'pink' wire is on the right and the grey tach wire is on the left. Some tach equipped cars came with a two wire connector but most used two single connectors. Remember what I said about firewall clearance. If you don't make some room, engine motion can break the cap and/or distributor. If you bench-test the HEI be careful. I have seen the spark jump over a foot! It bites! Hey Oly, I am glad to see you are closing in on success. Hang in there.