Electrical Gremlins - Injectors Edition

I brought a 85 N/A 300zx that had been sitting for about 10 years, had no spark, put a new CAS, a new power transistor, and got a decent coil and it fired right up and drove decently. Went to my local DMV and titled it, and now it won't run at all unless I use ether. figured fuel pump could use a refresh since you could hear it scream from outside the back of the hatch, so A new one is coming, but i pulled the fuel line today and found that when I put the key to on, and the pump primes all day, and fuel comes out of the hose pretty consistently. I pulled an injector wire and put a test light on the neg bat terminal, and harness and found what looked like 12 volts on both sides, and it wasn't pulsing with the cranking of the engine. So I turned the key off, and wouldn't you know that both terminals still have voltage, ignition fully off? After some research I'm leaning towards a short in the injector harness, but wanted to see what other input you guys had to offer. Any ideas?