"Broken" orange wire..... June 01, 2013, 06:56:18 PM In my harness that goes to the TAD solenoids behind the upper intake, at the "Y" of the harness, there's an orange wire there. It looks like it was either cut, or just never was used. What is it for? Quote Selected
"Broken" orange wire..... Reply #1 – June 01, 2013, 07:06:02 PM year and trim then ill check on shopkey Quote Selected
"Broken" orange wire..... Reply #2 – June 01, 2013, 07:08:52 PM 1988 Thunderbird Sport. 5.0. Quote Selected
"Broken" orange wire..... Reply #3 – June 01, 2013, 07:09:06 PM Oh, and I appreciate the help. Quote Selected
"Broken" orange wire..... Reply #4 – June 01, 2013, 08:56:52 PM Looks to me like its a ground coming the ecu on pin #49 same with a gray and red stripe on pin #44 Quote Selected
"Broken" orange wire..... Reply #6 – June 01, 2013, 09:08:50 PM It's been like that since I've had it..I can add a wire to it and a ring on the end to ground it. I do wonder why I haven't noticed any bad stuff happening without the ground wire hooked up. Quote Selected
"Broken" orange wire..... Reply #7 – June 01, 2013, 09:15:55 PM Yeah that is really weird lol might not control anything really important Quote Selected
"Broken" orange wire..... Reply #8 – June 01, 2013, 09:27:16 PM I've seen that too, but from what I can tell it's left over from 87 when it was used as a HEGO ground. 88 doesn't use it. Quote Selected
"Broken" orange wire..... Reply #9 – June 01, 2013, 09:40:00 PM That may explain it then. Quote Selected
"Broken" orange wire..... Reply #10 – June 01, 2013, 10:02:55 PM yeah that might be it haha gotta love 87//88 parts interchange Quote Selected
"Broken" orange wire..... Reply #11 – June 01, 2013, 11:07:24 PM I was thinking that bolted on the back of the head and was a ground for the HEGO. Quote Selected
"Broken" orange wire..... Reply #12 – June 01, 2013, 11:51:22 PM Pin 49 is the isolated ground or better known as a CLEAN GROUND for the Oxygen Sensors. It belongs near the DIZZY so the O2 sensors have the same ground potential. I find it hard to believe your car runs correctly with this disconnected. Reason being if not connected it upsets the entire mixture the ECM sees. On the TC that wire goes to the TURBO BELL. If you want to do it correctly install 4 wire O2 sensors and run that wire to each of them. Other wise it belongs near the DIZZY. Just saying!!! Hope this helps!!Or just ground it to the block somewhere. But the correct location is near the DIZZY. Quote Selected
"Broken" orange wire..... Reply #13 – June 02, 2013, 01:10:50 AM Tom, every '88 Tbird and COugar I've seen has had this orange wire unfastened. There was a thread about it a year or so ago. People hook 'em up, there's no difference. Non issue, IMO. Quote Selected
"Broken" orange wire..... Reply #14 – June 02, 2013, 05:19:46 AM OK i wont argue with you it is to early in the morning!! Every TC i have ever worked on has this wire connected to the TURBO BELL. What can i say?? Here is what FORD SAYS~~~ PIN 49 (HEGO GND) HEGO GROUND NEAR DISTRIBUTOR OR TURBO BELL. Quote Selected
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