94 Camaro not starting

I'm new to this site but I have a problem that some other members have had. My 94 Z28 won't start, it also doesn't click or anything! The problem started a few days ago, at first the starter would turn slow and then start the car. Then one day it was turning slow, then just died. I took the battery in to be checked and they said that was the problem, so I bought and new battery and STILL the car won't start, or make any kind of noises (like clicking from the solenoid) the car's accessories all work fine I just can't get it to start any suggestions?

check the starting/charging system wiring? sounds like a possible broken wire that is arching, draining power to the starter.

Vats? or would that also disable the accy.

I think it might be the main battery wire, that goes to the starter but I'm not sure. First I'm going to try to start it with the spare key and then I am going to pull out my voltmeter and see if any power is getting to the starter.