• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Safety neutral switch FMX tranny
#11
I found the plug (only one). They contain two red/light blue wires & one black/pink & one white (off white it seems like). The car starts in P-R-D-1-2.
Seems like I am missing the NSS.
I would appreciate and comments, advise & help.
Thanks,
  Reply
#12
[quote='Hemikiller' pid='343511' dateline='1554742192']
Coming out of the main harness behind the engine will be one or two square rubber plugs. One is for the NSS, which will have four wires. Two red w/light blue stripe (NSS) and two black w/red stripe (B/U lamps). Since the 302 cars only automatic option was a C-4 and you have an FMX with a missing NSS, then most likely you'll find that the plugs have been jumpered.

Easiest fix would be to replace you shifter with one from an FMX equipped car with the NSS.
  Reply
#13
I found the plug (only one). They contain two red/light blue wires & one black/pink & one white (off white it seems like). The car starts in P-R-D-1-2.
Seems like I am missing the NSS. I think the part number for the NSS is: D2ZZ-7247-B?
NSS has two plug connections, 1 is blue & the other is black. I can see the black plug connection mating with the one on my car but what is the blue plug connection for?
I would appreciate and comments, advise & help.
Thanks
  Reply
#14
71 FMX would use the C9ZZ-7A247-C aka Motorcraft SW-903 switch. You could also use the later D2ZZ-7A247-B switch you posted, the extra connector is for the seat belt warning system, which can be left unplugged.


  Reply
#15
The white/purple stripe wire is the power feed for the backup lights. The black/purple stripe wire runs from the backup light switch to the backup lights.

The red/light blue stripe wires are for the NSS, one leg comes from the ignition switch, the other goes to the "S" terminal on the starter solenoid.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
#16
(04-08-2019, 08:17 PM)Hemikiller Wrote: 71 FMX would use the C9ZZ-7A247-C aka Motorcraft SW-903 switch. You could also use the later D2ZZ-7A247-B switch you posted, the extra connector is for the seat belt warning system, which can be left unplugged.

Thank you for your reply & assistance.
I managed to find a NSS which I hope will fix my problems.
  Reply
#17
Sorry that I can’t add much to this post except to verify what plug is used on my original 3 speed manual. It has a four pin plug at the back of the engine centered on the fire wall so maybe that might help eliminate looking for a plug in the wrong place.

but I do have a question where to place the backup switch on the three speed manual
I have a bracket and assume it mounts to the shifter...If anyone Has a pic of where that switch mounts I’d appreciate it. Thanks!!!
  Reply
Share Thread:  




Users browsing this thread: 1 Guest(s)