Ok i'm on a quest to get my 86 diesel burb to be less awnry on cold morning start-ups. I have 2 brand new batteries, new gear reduction starter and just installed new glow plugs that I got at SSDieselsupply.com. Still a pain to start. I just finished replacing the glow plug connectors with new spade connectors in the hopes that maybe the old loose connectors weren't making good contact. Still no good. My next plan is to by-pass the glow plug controller. I cant seem to find that "blue" wire My controller is on the back driver side of the motor. It has a flat 4 wire connector. 2 pink wires, 1 black and 1 yellow wire comming out of it. Also have one big red wire which I assume is the power and two orange wires which I also assume is the power wires for the glow plugs. No blue wire though. The blue wire is the ground correct? I have a blue wire that is grounded to the intake on the passenger side. It appears to go into that big wire loom that runs along the back firewall. Is this the wire I m looking for? Figured i'd ask before I got testy and started really tearing into it. From the posts i've read it doesn't sound like something one needs to go ripping through the whole electrical system to get working. Thanks for any help you can give. Oh on a side note; Walt at SSDiesleSupply.com is a good guy. When I was putting in the new glow plugs I broke one of the connectors off. I emailed Walt and asked him if it was possible to purchase just one glow plug instead of having to buy a set. Walt sent me out a new glow plug, no charge. Can't say enough about Walt SSDieselSupply.com. Good place to deal with.