1995 5.0 HO Transplant Questions Reply #15 – February 27, 2011, 04:53:17 PM Quote from: Bruce M;354147I dont mean to highjack but I read on this thread that the 87 and 88 harnesses are different. Does this mean that if I use a 87 mustang computer for my HO swap that I will have to repin? Sorry for the highjack. If you're staying with Speed Density, you just plug the computer in. No harness mods at all. Plug and play. Quote Selected
1995 5.0 HO Transplant Questions Reply #16 – February 27, 2011, 05:28:11 PM Quote from: vinnietbird;354151If you're staying with Speed Density, you just plug the computer in. No harness mods at all. Plug and play. Awesome! Quote Selected
1995 5.0 HO Transplant Questions Reply #17 – February 27, 2011, 07:04:25 PM Well, if your car was an '87, you'd have to repin some wires to use an '88 engine harness, as well as change connectors, as they are physically different.However, on my '88, I've got a Stang DA1, using the complete, and unaltered whatsoever Tbird engine harness, with an '89 Stang 5.0 engine. No mass air, and not other mods.Everything is truly plug and play, but I had some wiring that came with my drivetrain...injector harness, O2 wiring, etc..I used all of that...the 5.0 itself will mate to an '87 OR an '88 harness...it's where the engine harness connects to the car proper, that the differences between the 2 years become separate.Hope this helps, even though yours is an '83...of that, I have no idea, I've never seen a cfi 5.0 in person. Quote Selected
1995 5.0 HO Transplant Questions Reply #18 – February 28, 2011, 08:18:25 AM Yes a '88 5.0 harness will swap into a '88 3.8 car and everything is plug and play as long as you are using speed densety, I suspect the same applies to '87 & '86, it's when you mix years the fun begins... Any harness going into a earlier car will no doubt need some degree of altering to make it work...When I did my 5.0 swap in the the TC, I disconnected every thing I could on the 5.0 '87 donor to see on how little it would still run... What i found is that as long as all grounds are still in place for the injector, ECU & fuel pump harnesses'(you're gonna need all three), the engine would still run as long as a red & green wire had power(feed to EEC relay)... With everything disconnected including the plug on ign switch, I could connect that wire to the battery, jump the solenoid to crank the engine and she'd run...One other connection that should be made is the constant power(memory) feed for the ECU, the engine will start and run without it but will always be in a learning mode... Quote Selected
1995 5.0 HO Transplant Questions Reply #19 – February 28, 2011, 10:21:35 AM Well, I have everything from the '95 car - the entire harness and computer. I also have another whole harness and computer from an '89 that came with the last motor I bought. I conned a friend of mine into helping me with this and we'll be working on it at his shop when he gets a lift free. Quote Selected
1995 5.0 HO Transplant Questions Reply #20 – February 28, 2011, 10:32:14 AM Good luck. Quote Selected
Topic: 1995 5.0 HO Transplant Questions (Read 4106 times)
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