Author Topic: Wiring question (Read 32900 times)

PintoMaverick · « **on:** January 01, 2013, 12:02:21 PM »

Hopefully this year I will be able to finish my turbo Pinto after a long break, doing house renovations, work, school, etc. I'm finishing up the wiring for the engine and the rest of the car. I rewired the entire car with an EZ wire kit. All has been rather straight forward and going nicely. Although I have one wire in the factory engine harness I cannot figure out exactly where it goes, and the harness was cut at the pigtail for the alternator. The wire is a Red with Light Blue stripe. From what I can tell from the diagrams I have, this is for the starting and charging system, but it doesn't state in any of them exactly where it leads. I'm assuming on the alternator but I'm not sure on which terminal. I have the rest of the alternator connections figured out but this wire is causing me some problems. Does anyone know where it goes? I really don't want to hook this up the wrong way and fry something. This is one of the last connections before I have everything ready to try and fire this thing up in the next few weeks. Any help would be appreciated.

Fred Morgan · « **Reply #1 on:** January 01, 2013, 12:14:10 PM »

That goes to FLD on alternator . Fred

PintoMaverick · « **Reply #2 on:** January 01, 2013, 01:54:44 PM »

Thanks Fred. Now where is the FLD on the alternator for a 1988 2.3? Can I tie into the same terminal as the BRN/WHT wire states in the diagram is also for the starting and charging systems? My alternator doesnt have a clear marking for the FLD like the older side terminal alternators do, it has the 2 plug in connectors.

Fred Morgan · « **Reply #3 on:** January 01, 2013, 02:17:21 PM »

Ok I understand you have the higher amp alt the blade connector that is closest to pulley is your fld connecter I will get U pictures. Fred

PintoMaverick · « **Reply #4 on:** January 01, 2013, 02:22:25 PM »

Oh your awesome Fred!

Fred Morgan · « **Reply #5 on:** January 01, 2013, 02:27:54 PM »

Blue arrows point to fld see markings on alt. Fred

PintoMaverick · « **Reply #6 on:** January 01, 2013, 03:42:09 PM »

Fred your alternator is different than mine. Here's a pic of mine

Fred Morgan · « **Reply #7 on:** January 01, 2013, 04:11:26 PM »

Oh I thought I was working with a Pinto. I may be able to tell you if you remove black cap. Fred

PintoMaverick · « **Reply #8 on:** January 01, 2013, 04:24:07 PM »

We are talking about a Pinto...just one with a 2.3 Turbo engine lol, sorry for the confusion.

. Removing the black tubing wont help because I had to extend those wires because someone cut them off way too short, so they are not factory color. The wire in question comes from the TFI ignition module on the distributor and its the only one coming off of there that I dont know where to hook up. The others are for the spout connector and the coil.

Fred Morgan · « **Reply #9 on:** January 01, 2013, 04:38:36 PM »

I can only tell you red with blue tracer is FLD. I don't know that alt.. Fred

PintoMaverick · « **Reply #10 on:** January 01, 2013, 04:48:40 PM »

Well thanks for your help anyway, I appreciate it. Maybe someone else on here will know. Its annoying that this one little wire is holding me up.

oldkayaker · « **Reply #11 on:** January 02, 2013, 06:22:34 AM »

Looking at the 74 wiring diagrams, the red with light blue stripe might be the small control wire going to the starter solenoid. If this is the case, it functionally begins at the ignition switch, going to the "starter interlock override reset switch", and on to the solenoid. Note the wire color changes to a white with pink dots for a bit between the ignition switch and the reset switch.

That alternator looks the same as the one I removed from a 87 Turbocoupe except for the connector wires. My 87TC factory wiring did not match the factory wiring diagram, so I am not sure what is correct here.

PintoMaverick · « **Reply #12 on:** January 02, 2013, 07:17:26 AM »

See thats the problem. I have diagrams that show this wire but none show where to it leads just says "to starting and charging system". I have no idea what this harness came out of. I bought it seperately from the engine with an LA3 ECU. What you mentioned about the starter solenoid makes sense so maybe I will look into that a little more until someone has an answer.

PintoMaverick · « **Reply #13 on:** January 02, 2013, 08:44:10 AM »

Quote from: oldkayaker on January 02, 2013, 06:22:34 AM

Looking at the 74 wiring diagrams, the red with light blue stripe might be the small control wire going to the starter solenoid. If this is the case, it functionally begins at the ignition switch, going to the "starter interlock override reset switch", and on to the solenoid. Note the wire color changes to a white with pink dots for a bit between the ignition switch and the reset switch.

That alternator looks the same as the one I removed from a 87 Turbocoupe except for the connector wires. My 87TC factory wiring did not match the factory wiring diagram, so I am not sure what is correct here.

Well after doing some further searching I believe you are correct. I had to do a Google search for Ford TFI images, which led me to several different pinouts, all showing pretty much what you stated. I will post them in case anyone might run into the same issue. When I get home today I will try and sort this out if I have enough daylight left.

PintoMaverick · « **Reply #14 on:** January 02, 2013, 08:45:55 AM »

Here are a couple better pinouts/diagrams

oldkayaker · « **Reply #15 on:** January 02, 2013, 12:56:33 PM »

The LA3 came in the 88 Turbocoupe with a manual transmission. Below are scans of the 87TC EVTM (similar to the 88TC) showing that circuit. The 74 Pinto with all the seat belt interlocks is more complicated than the 87TC for this circuit. Had to reduce scan resolution to get under the 100kb limit here. If you need a better resolution, pm me your email address and I will email you better scans.

PintoMaverick · « **Reply #16 on:** January 02, 2013, 02:10:51 PM »

Thanks I sent you a PM

PintoMaverick · « **Reply #17 on:** January 02, 2013, 02:14:44 PM »

Theres nothing left of the factory Pinto harness besides pigtails. The whole care has been rewired. The under dash harness was so chopped up I ripped everything out and rewired with an EZ wire kit. So the wiring is pretty straight up now, no seatbelt circuits in this one.
Travis

oldkayaker · « **Reply #18 on:** January 02, 2013, 05:51:21 PM »

A better scan in the pdf format has been emailed. Have fun with the turbo.

PintoMaverick · « **Reply #19 on:** January 02, 2013, 10:08:32 PM »

Thanks so much for the help Jerry! That clarifies things quite a bit. I'll let you guys know how it goes. Hopefully I can get it ready to fire by next week.

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Author Topic: Wiring question (Read 32900 times)