Set Timing 1989 K2500 350 CID
 

I need to set the timing on the above vehicle. I need to disconnect the single wire (Tan w/black stripe) behind the plastic cover on the pass firewall. Where is that wire? Which plug is it? Is it in the middle, left, right?

RE: Set Timing 1989 K2500 350 CID
 

its on your right as you look at the firewall with the cover off...it may have a bit of tape around it...a 1-wire black connector

RE: Set Timing 1989 K2500 350 CID
 

Found it. Thanks.