I have a '72 240z with '98 LS1/T56 swap in progress. It's not road ready, but I was to a point where the car would fire up and idle every time. I just recently installed Speedhut gauges (GPS speedo, tach, water temp, oil temp, oil press) and couldn't get the car to turn over and start. Did some research and determined it to be the white & white/red wires going to the stock ammeter gauge. Last night I went out to connect those, and also hook up an idiot light to the alternator but I had no power to any guages and the car wouldn't turn over. I do have power to the head lights and gauge lights.
Battery is fully charged.
I had 2 blown 20A glass fuses, and 1 10A glass fuse. I replaced those, no change. Not sure why they blew in the first place but I'll be watching them to see if they blow again.
I checked all the fuses in my aftermarket relay/fuse box. All fine.
My only other thoughts were the fusible links or accessory relay. I'm not positive I've found the fusible link or if it's even used now. Is there anything else obvious that I should be checking for?
Please help me chase down this gremlin!!