Drifter_7

I have just received a US spec wiring harness and it is a little different from the J spec one I have, Both are S5 T2. The US one has 4 connecters that come into the cabin from the engine bay and the J spec only has 3? What is the extra connecter for? Will the US spec work the same? I am doing a T2 conversion in to an 86 GXL.

Also does the us spec one have their wiring crimped (in the middle or ¾ of the way down) and have some plastic stuff melted around them; or has something happened to mine and someone tried to fix it?

DigitalSynthesis

Got pics?? I assume you are talking about the EM harness... I have both a US spec and a Jspec EM harness here from an S5 TII and they have the same connectors on the cabin side. There are some rubber grommets on the harnesses to mount them to the stock locations, but the only crimps that are on the harnesses brand new are at the plugs, nothing in the middle. If there is any heatshrink or crimped connectors on the harnesses that indicates something has been done to them. Crimping is BAD... soldering is better, and if it was soldered and heat shrunk, as long as the soldering was done right and the wires are all connected properly, there should be no problem compared to the stock configuration, but its another point to check. Also, compare the harness wiring against the FSM to make sure everything is present and connects to the right parts. Be very careful to trace wires and color to the proper destinations if you determine its been modified.

Drifter_7

Is the Em Harness the same thing as the harness that connects to the engine (engine wiring harness)?

If it is then yes the plugs that go into the cabin are different. Could it be that the harness that I received is an S4?

DigitalSynthesis

Take pictures of both, if you can. Detail the plug areas, and the part with the heatshrink/crimping. Also check the proper FSM to ensure the plugs are correct. There are two blocky yellow plugs which go to the ECU (at the very end of the harness) and two plugs (yellow and brown I think??) that are near the rubber boot which is at the firewall. That is the proper setup for an S5. See http://www.argentproductions.com/arb...er.php?a=parts for an NA Aspec and a TII Jspec harness. The plugs on the interior are identical (give or take a few pins inside them). That is all S5 stuff.

DigitalSynthesis

Oh, and yes, the EM (for EMissions) harness goes from the ECU to the engine.

RotaryResurrection

iTrader: (8)

That is correct, the jspec engine harness has 3 connectors, the us spec has 4. Rather, the RHD harness 3, the LHD harness 4. The extra plug runs things such as wipers, cruise, a/c, heat, fan, etc. Stuff you sorta need, for a street car. IF you're okay without those comforts, the jspec harness will run the engine fine (it is a tight stretch).

DigitalSynthesis

Oh yeah I forgot about those two plugs... You can see in my pics actually, the brown plug is missing on the Jspec... I didn't even notice that as I was more concerned with the Aspec harness you had and whether it was correct or not (since you plan to use it... right??) ... but Kevin is completely right, go ahead and check out my pics and you'll see the missing plug on that harness.

Kevin, doesn't the Jspec have that same plug just on a different harness? Because I remember pulling them apart from my parts car, I just didn't grab the other harnesses because they weren't that important to me at the time. Now I wish I had them - I'd slice them up and use the connectors. Regardless, I know my Jspec had those features - maybe they were on the front harness ?? Odd though b/c the wiper motor was on the left side of the car where the EM harness came out... BUT there was no cruise. That might have been the major factor. I think it would be cool to have in the FAQ a complete map of the differences for Jspec versus Aspec. I'm willing to provide the complete pinouts of my Jspec harness if somebody wants to detail an Aspec one.

RotaryResurrection

iTrader: (8)

The jspec car has those features, just not on this harness.