check behind the relay cover on the pass side firewall. it will be a black cover that comes off with 2 or 3 plastic nuts. behind it will be a single wire with the connector hes talking about. i thought it was brown but i may be wrong. anyhow, im pretty sure its the only single wire connector behind there.
run the truck to opperating temp. loosen the dist hold down. unplug the single connector. set timing to specs, i believe 0 on that. tighten the dist. retest timing and make sure it didnt move on you when tightening the dist, adjust if need be. plug the connector back in. put the cover back on and your ready to rock and roll!

bob