What is Ignition timing procedure for a 1992 Chevy s10 2.8L v6?

I know that you have to put the truck in base timing mode for my 93' but I have a EST or HEI style ignition. If you have the electronic distributor then find the grey wire with a plug on the end of it next to the A/C box on the left side under the hood near the firewall. It will be hanging out of the wire harness. Apply 12 volts to it from your battery with a jumper wire and the truck will go into base timing mode. then line up the marks on your balancer. take the jumper wire out and your set.