I overheated the 400 small block in my 85 k20 the other day while plowing, stalled it, then thought I'd fried the sterter, attempting to restart. So I put a new starter in today, but no dice. It won't spin, won't even click. Battery is brandy new, so is the alternator. The starter is definately hooked up correctly, and there is plenty of juice going to the starter too. (I did the screwdriver to the terminals trick, it spun the starter, but the solenoid didn't kick in). What's up? Is it the ignition switch, or os there a relay somewhere? I looked at Chucks schematic, and it shows a block on the firewall, does that have a relay? The horn blows, the lights light, key won't start the truck!! Any ideas?