Started the harness mapping last night. I chose to start with the small ignition portion of the harness to get a feel on how this is going to go.
I laid out the harness in close to its orientation on the motor and got to work documenting colors, connectors and items the connectors are supposed to feed.
Attachment 108979
Now comes the interesting part that I'm not quite sure what to think yet and hopefully I get it figured out.
Seems there are some discrepancies in Ford's own manuals.
I have the prints for 1984 that I got from the sticky here in Electrical, the Ford EVTM for 1984 and also the diagrams out of the Haynes manual, which are about useless honestly, and they do not coincide very well with each other or what I'm looking at in front of me in the harness.
Case point example:
The Grey 8 pin plug that connects this harness to the main engine harness.
The 1984 EVTM has this connector labeled as C135 (8 pin grey)
This connector feeds the following connected parts on a 5.0 H.O. according to the EVTM
1) WOT A/C cutout switch
2) TAD Solenoid
3) TAD relay/WOT cutout relay
4) Clutch cycling pressure switch/A/C throttle boost solenoid
5) Tach/ - coil
6) + coil
7) no item specified
8 ) no item specified
The 1984 schematics from this site has the connector listed as connector C200 (8 pin grey)
This connector feeds the following connected parts on a 5.0 H.O. according to the schematic
1) no item specified
2) no item specified
3) no item specified
4) no item specified
5) Water temp sensor
6) Oil pressure sender
7) no item specified
8 ) no item specified
Now as seen above there is already conflicting info, so let's dig a little deeper.......
Here is what I have in front of me:
1) WOT A/c cutout switch
2) Coil +
3) Coil - / Tach
4) Empty
5) Water temp sensor
6) Oil pressure sender
7) WOT A/C cutout switch/Carb throttle emission control solenoid
8 ) Empty
Soooooooo let's throw a few more wrenches in the pit.
According to the EVTM, the oil pressure and water temperature are in a different connector (C147 3 pin)
According to the schematics, everything but the temp/pressure senders are in a different connector (C207 6 pin grey)
NOW.....connector pin layout and wiring colors match exactly what is labeled in the schematics as C200. The only difference is what is connected to this.
I'm not 100% sure but I'm wondering if this might be part of a running change. I even looked at the 1983 and 1985 schematics on this site and they don't match what I have either, so I'm not sure what to think.
I know I'm not the brightest on electrical schematics but I can read and follow them mostly.....when they are close to what I'm looking at. I could be reading these things wrong but I'm sure I'm not.
This could be a long endeavor at this rate. I almost feel like I'm trying to drive across the country, on the path less beaten, using a TomTom GPS that hasn't been updated since 2010.
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