Sun Diagnostic Computer help needed

I've got the user's manual with mine. It will do anything the older scopes will do, plus the alternator waveforms, which was great. I was working on a Jag X-type that wouldn't charge the battery with the AC on. Voltage was great with the AC off, but there was way too much ac voltage coming out of it. I don't have any of my old cars running and I need to fix one of the leads. I also recently picked up an old distributor machine that will also need some work.