Thanks to Blue and my friend Roger Schmidt, I now have a working tachometer. I should also mention Carl B. and John Huff for their wiring diagrams (that Blue showed me) that finally showed this electrical no-nothing how to wire in the tach with the pertronix ignition and 3 ohm coil. But not only do I have a working 240Z tach, ALL MY GAUGES ARE NOW FUNCTIONAL! Even the old clock! I took the clock out, took it out of its can, jiggled around and sprayed it with PB Blaster and lo and behold, it started ticking again. Ran it a couple of days on a 12 volt source until I had the speed adjusted, and back into the dash it went. My fuel gauge hadn't been working, but that was just a matter of using a blow dryer to heat those damn nailhead rubbers until they were soft enough to get the connectors hooked up (again, based on advice from this forum). Then, my Ammeter and temp gauge were squirrelly, (they had worked at first, but quit) but on closer inspection I saw that the faceplate was loose and was pinching the needles. Simple matter of reattaching the faceplate and it is working fine. Now I get to put the heater panel back in and hook up all those damn control cables. My map light works, my glovebox light works, all instrument lights work and the dimmer works. Same for headlights (high and low), turn signal, emergency flashers, side markers, brakes, reverseThe AM radio works, even the auto-tune still works, and the only thing not working now is the antenna. I bought a new electric antenna and the old switch does work, but I'm going to need to put a relay in to make them work together. The windshield wipers are SLOW but it's the original motor. The washer tank and sprayers work too, but not great, it's time for a new pump. Oh yeah, my inspection light works! OK, sorry, now I'm starting to brag, but any of you that have spent any time chasing down electrical gremlins know what I'm talking about. Thanks for the advice on how to get to the gauges too (I found removing the heater panel to be the way to go). I really need to post a video showing her out on the road. She runs great, sounds awesome and looks beautiful. Just waiting on bumpers (from Futofab)!