1997 Chevy S-10 Power and no power

1997 2.2L chevy. I have just replaced timing chain, crank sensor, throttle position sensor, #2 fuel injector, plugs and wires, and 1 of the 2 coils. The truck was running good.
went out to go to work and had power to interior light andthe clock on the radio, When I turned key there was no power to the starter, dash, or radio. Changed ignition switch and the dash lights came on and the truck clicked when I tried to start it then, right back to how it was before. The power comes and goes to the lights. Battery test is fine, battery ground to block is good.
any ideas?