I have the engine from an 88' TC in my pinto. My wiring harness is from a Merkur. The problem is that the female plug on my injector harness(88' TC) will not fit with the male end that comes off the harness. I have the CORRECT male plug that fits into my injector harness. So i guess I need to splice this into my Merkur harness. My issue is the color differnce in the wires. I've searched through wiring diagrams but haven't found anything that will help me with this. Anyone????? Thanks. - Amin
Quote from: uncleamin on May 23, 2007, 10:44:12 AM
I have the engine from an 88' TC in my pinto. My wiring harness is from a Merkur. The problem is that the female plug on my injector harness(88' TC) will not fit with the male end that comes off the harness. I have the CORRECT male plug that fits into my injector harness. So i guess I need to splice this into my Merkur harness. My issue is the color differnce in the wires. I've searched through wiring diagrams but haven't found anything that will help me with this. Anyone????? Thanks. - Amin
I have only used the T/C harnesses so I am at a loss to be much help.
Do you have the wire charts for all three?
Sorry,
Bill
Quote from: uncleamin on May 23, 2007, 10:44:12 AM
I have the engine from an 88' TC in my pinto. My wiring harness is from a Merkur. The problem is that the female plug on my injector harness(88' TC) will not fit with the male end that comes off the harness. I have the CORRECT male plug that fits into my injector harness. So i guess I need to splice this into my Merkur harness. My issue is the color differnce in the wires. I've searched through wiring diagrams but haven't found anything that will help me with this. Anyone????? Thanks. - Amin
I did the same Swap, '88' TC motor to an '86' Merkur harness. When I first got the car on the road I didn't have an IC so I used the Merkur Injector Harness. Once I put an IC in the car I then just plugged the 88 TC Injector harness into my Merkur Harness. When I go outside to work on my car today I'll write the Color Combos down (88 TC Injector Harness to an 86 Merkur Harness) to help you out.
turbowagonman
Per this link, there are some differences in the Mekur and TC computer wiring. If you are using the 88TC computer, you will need to move some pins around for the VAF, BCS, and EGR (if used). It also looks like you will need additional computer wires for the octane switch and the ACT. If you have an automatic, there are a couple for that also.
http://www.gt350mustang.com/eecspecsturbo.htm
I am not sure which wiring diagrams you have. I have one for the 87TC. Below is a list of the 8 wires in the TC connector #C387 with the color and TC computer pin #. You will need to look at your computer plug pins and determine which Mekur color goes to that pin. This should allow you to figure out the color to color splice needed.
color, pin#, description
PK/BK, 25, this is for one side of the ACT (you will need to tie the other ACT wire to signal return, BK/W, EEC pin# 30/46
LG/Y, 7, this is for one side of the ECT
BK/W, 30/46, this is the signal return for the ACT, ECT, and the knock sensor
T, 58, this is for injector #1
W, 58, this is for injector #2, this W wire gets spliced into the T wire before arriving at the EEC as a T wire
BR/Y, 59, this is for injector #3
BR/LB, 59, this is for injector #4, this BR/LB wire gets spliced into the BR/Y before arriving at the EEC as a BR/Y wire
R, 37, this is the +12V from the EEC for the injectors
There is another 4 pin connector #C128 coming from the TC injector harness for the water temp gauge R/W, oil pressure gauge W/R, oil level indicator DB/LG, and the other knock sensor wire Y/R computer pin #23.
Hope this helps. Note the color codes do fade with age.
Thank you guys for the replies. I had to get away from it for a bit bc I was getting too steamed trying to figure it out. I'm gonna go back out today and give it another go using what you posted for a reference. Here's a pick if this makes it any more clear what I'm dealing with. It sucks bc this is like one of the last things I have to get past before it fires. Thanks again. - Amin
http://www.putfile.com/pic.php?img=5516432
Ok I went out there and looked at the merkur injector plug. It has 4 wires that are the following colors:
1)Faded Red...or Pink??? This one goes to either pin 24 or 57...I'm not sure on this bc there is two of them the exact same color.
2) Gray and Orange - pin 59
3) Gray and Red - pin 58
4) Red with white stripe - This one does not go back to the computer...it hooks around to some other plug.
The Turbo Coupe Plug had all the colors you said it would....I just don't see how that I'm going to splice the 7 TC wires into only 4 Merk wires. Thanks. - Amin
1) On the 87TC, the computer, pins 37 and 57 are tied together in wiring harness. This should be VPWR (+12V for the injectors). So I suspect the Merkur faded red or pink should be spliced to the TC red. Pin 24 on the TC is for the octane switch and is red with a yellow stripe. The link http://www.gt350mustang.com/eecspecsturbo.htm indicates that Merkur does not use this pin (not sure why your Merkur harness has a wire there).
2) Pin 59 is for injectors 3 & 4 (injector bank 2). So splice the TC tan & white to the Merkur gray-orange.
3) Pin 58 is for injectors 1 & 2 (injector bank 1). So splice the TC brown-yellow & brown-light blue to the Merkur gray-red.
4) I do not know what the Merkur red-white wire is for. Maybe somebody with a Merkur wiring diagram will chime in.
This takes care of 5 of the 8 TC wires and connects the injectors. For the remaining 3 here and the 4 at the other plug, you need a Merkur diagram and some additonal wires. Do not forget to repin the Merkur computer plug for the TC computer (see the link above) for the different VAF, BCS, and EGR wiring. This link may also help some http://www.merkurencyclopedia.com/ (go to "EEC-IV" at top and then click on "TC EEC into XR" on the left).
If you give me your address I will send you one of my many extra Merkur injector harnesses. Make it easy that way. No charge of course. Just like to see the Pinturbos fired up!!!
Thank you guys so much for all the help you gave on this topic. I think Might have it figure out now. - Amin
2point3turbo you have a pm