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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

5.0 ignition wiring help

  • Thread starter Thread starter Jetscat7
  • Start date Start date Nov 25, 2025
J

Jetscat7

New Member
Nov 25, 2025
2
0
1
Long Beach
Nov 25, 2025
#1
  • Nov 25, 2025
  • #1
Hello,
My nephew and I are working on his new 85 GT and we can't seem to get any spark. Everything else seems to be working fine: fuel pump, coil, etc. The eight-pin wire harness for the ignition has some broken wires; it is old, cracking, but has specific color coating on them. Does anyone know how to identify these eight wires there seems to be two that were broke off
 

evintho

20+ Year Stangneter
Nov 12, 2003
683
245
73
Santa Rosa, CA.
Nov 25, 2025
#2
  • Nov 25, 2025
  • #2
Well......the one wire I see that's cut is red with a yellow tracer, which is probably some sort of power wire. You need one of these..............

1985 Ford Mustang Mercury Capri Electrical Schematic Foldout Wiring Diagram | OE | Paper | 85

This is the original wiring diagram printed by Ford for dealer mechanics. You can follow the wiring in your truck from bumper-to-bumper. It will help you to understand connector configurations, and locate & identify circuits, relays, and grounds. Although the schematic is in black and white, the...
www.ebay.com
 
J

Jetscat7

New Member
Nov 25, 2025
2
0
1
Long Beach
Nov 25, 2025
#3
  • Nov 25, 2025
  • #3
Thank you we will order this and see
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
42,933
21,109
234
Box behind Walmart
Nov 25, 2025
#4
  • Nov 25, 2025
  • #4
I have three sets of diagrams from this outfit.

I've got 86, 89, and 93 and they are all excellent.


Here is a set for your year:

11 x 17 COLOR Wiring Diagram for Ford 1985 Mustang (Fox Body) US Spec 4 pgs | eBay

Make & Model: Ford Mustang (Fox Body Style). YOU WILL GET A DIAGRAM - NO MATTER WHAT. Prospero's Wiring Diagrams presents 11 x 17 - Bigger than other wiring diagrams. The Quick and Dirty on Our Wiring Diagrams.
www.ebay.com

Here is a link with some images of 86 and 89 sets: https://stangnet.com/mustang-forums/threads/fox-stuff-have-you-seen-this.927351/post-9438835
 
Reactions: General karthief, 85GTStangGuy and AeroCoupe
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