Wiring..I'm using EDIS ignition with coil packs. Safeguard is available for distributor ignitions too.
Monitor shows how much retard and also AFR.
Power on self test and start. Safeguard works way better than the MSD knock alert I took off. You can set Safeguard however you want. Pulls timing on individual cylinders and then adds it back when the knock goes away. http://www.jandssafeguard.com/