Kyle_christina Posted March 11, 2019 Author Share Posted March 11, 2019 You will find a few changes, a couple of pin functions changed in 1987 up, and there were some additions starting in 1998 for the E4OD. Go here for pinouts:http://www.garysgaragemahal.com/efi.html As previously mentioned, I have a few salvaged harnesses, including a 1988-91 pair, and a 1995 one. I can remove as much of the EEC-IV wiring from one of the 1988-91 harnesses and send it to you, I also have a few of the sensor plugs (ECT, ACT, Knock Sensor EGR position etc.) I realized i never have given a picture of the old harness so here it is. And i bought this wire gauge on amazon to help determine exact wire size that i need to buy. It was $8 and free shipping with prime. Link to comment Share on other sites More sharing options...
85lebaront2 Posted March 11, 2019 Share Posted March 11, 2019 I realized i never have given a picture of the old harness so here it is. And i bought this wire gauge on amazon to help determine exact wire size that i need to buy. It was $8 and free shipping with prime. That looks about as bad as the one my son had in his 1986. When I get over to Newport News VA again, I will see if I can get the box of 1985.5/1986 harness stuff. Link to comment Share on other sites More sharing options...
Kyle_christina Posted March 11, 2019 Author Share Posted March 11, 2019 That looks about as bad as the one my son had in his 1986. When I get over to Newport News VA again, I will see if I can get the box of 1985.5/1986 harness stuff. It is definitely in rough shape. Just about every wire seems to have been fixed at some point by grafting in wire in different places and alot of butt connectors lol. I appreciate your help. I am going to try to document what each wire size is. I found some 18 gauge, 16 and i haven't been able to get back to it yet to see what the rest of it is. My thoughts were to just buy 16 gauge for all of the harness minus the bigger stuff since i am going to be splicing most connectors in anyway. What are your thoughts? Link to comment Share on other sites More sharing options...
85lebaront2 Posted March 11, 2019 Share Posted March 11, 2019 It is definitely in rough shape. Just about every wire seems to have been fixed at some point by grafting in wire in different places and alot of butt connectors lol. I appreciate your help. I am going to try to document what each wire size is. I found some 18 gauge, 16 and i haven't been able to get back to it yet to see what the rest of it is. My thoughts were to just buy 16 gauge for all of the harness minus the bigger stuff since i am going to be splicing most connectors in anyway. What are your thoughts? The problem with buying a loot of 16 gauge, it makes the bundle a lot thicker. On splicing, do not rely on crimp splices, the sensor circuits are 5 volt across, so a little resistance will mess it up totally. I do have sources for some of the connectors and their innards and a pretty fair assortment I have salvaged. What I plan on doing for the 60 pin EEC connector is to take it loose from the harness as far as the wires run so you will have some to work with. Link to comment Share on other sites More sharing options...
Kyle_christina Posted March 11, 2019 Author Share Posted March 11, 2019 The problem with buying a loot of 16 gauge, it makes the bundle a lot thicker. On splicing, do not rely on crimp splices, the sensor circuits are 5 volt across, so a little resistance will mess it up totally. I do have sources for some of the connectors and their innards and a pretty fair assortment I have salvaged. What I plan on doing for the 60 pin EEC connector is to take it loose from the harness as far as the wires run so you will have some to work with. I really appreciate you going through the trouble to get that 60 pin connector and other pigtails. Thanks for the feedback about wire size. I am just going to go through and check every wire, document what size it is and order wire accordingly then. I didn't know how much it would affect the way it would run. I was just going off the fact that it ran with all of the butchered wiring the way it was and figured it would still be a night and day difference. I am not going to do any crimping unless it is new pins. I am going to solder all connections together. I know there is a large debate about that too! It seems to be about a 50/50 split with soldering vs crimping. Link to comment Share on other sites More sharing options...
85lebaront2 Posted March 11, 2019 Share Posted March 11, 2019 I really appreciate you going through the trouble to get that 60 pin connector and other pigtails. Thanks for the feedback about wire size. I am just going to go through and check every wire, document what size it is and order wire accordingly then. I didn't know how much it would affect the way it would run. I was just going off the fact that it ran with all of the butchered wiring the way it was and figured it would still be a night and day difference. I am not going to do any crimping unless it is new pins. I am going to solder all connections together. I know there is a large debate about that too! It seems to be about a 50/50 split with soldering vs crimping. As far as soldering vs. crimping, IF you can get heat shrink crimps with the sealer in them to be heat shrunk down over the splice, then it MIGHT be ok. You might want to ask the ones who are in favor of crimped vs soldered and heat shrunk (a) how much rewiring they have done and (b) how long it has lasted. FWIW, the man who taught me about wiring had an MS in electrical engineering from MIT. Link to comment Share on other sites More sharing options...
Gary Lewis Posted March 11, 2019 Share Posted March 11, 2019 I really appreciate you going through the trouble to get that 60 pin connector and other pigtails. Thanks for the feedback about wire size. I am just going to go through and check every wire, document what size it is and order wire accordingly then. I didn't know how much it would affect the way it would run. I was just going off the fact that it ran with all of the butchered wiring the way it was and figured it would still be a night and day difference. I am not going to do any crimping unless it is new pins. I am going to solder all connections together. I know there is a large debate about that too! It seems to be about a 50/50 split with soldering vs crimping. I solder. And use adhesive-lined heat shrink. The only crimps I use are for battery cables, and those are done using 16 ton hydraulic crimpers giving extremely tight crimps. Link to comment Share on other sites More sharing options...
Kyle_christina Posted March 12, 2019 Author Share Posted March 12, 2019 I solder. And use adhesive-lined heat shrink. The only crimps I use are for battery cables, and those are done using 16 ton hydraulic crimpers giving extremely tight crimps. I like soldering because in my field we solder everything for our test equipment. I work for deere and setup tests on our construction and forestry equipment. Anyway our stuff gets rattled and beat to death and the solder joints are almost never the fail point if there is a failure. So it is hard for me to be on the crimp bandwagon too. Link to comment Share on other sites More sharing options...
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