• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

What are "proof" wires on the ignition switch?

  • Thread starter Thread starter xoxbxfx
  • Start date Start date Aug 10, 2004

xoxbxfx

Founding Member
May 9, 2001
3,959
0
0
Southlake, TX
Aug 10, 2004
#1
  • Aug 10, 2004
  • #1
Well, im installing a new wiring harness and came across 2 "proof" wires on the back of the ignition switch. The shop manual doesnt say crap about it. Anyone know what they are for??
 

WORTH

20+ Year Stangneter
Nov 18, 2002
2,166
44
98
Cape Cod, Ma.
Aug 11, 2004
#2
  • Aug 11, 2004
  • #2
xoxbxfx said:
Well, im installing a new wiring harness and came across 2 "proof" wires on the back of the ignition switch. The shop manual doesnt say crap about it. Anyone know what they are for??
Click to expand...

never heard of a proof wire, give me the year and the color of the wires, and I'll see what I can find in the wiring diagrams.
 

xoxbxfx

Founding Member
May 9, 2001
3,959
0
0
Southlake, TX
Aug 11, 2004
#3
  • Aug 11, 2004
  • #3
worth...

the wires are purple and the other is a red with a white tracer. I followed it on a diagram and it says one goes to the "low brake switch" and the other doesnt even have a wire on the diagram

Thanks for the help
Tim
 
You must log in or register to reply here.

Similar threads

C
Electrical HELP! 1989 5.0 Stick, Voltage Bleed onto Ignition Trigger wire
  • ChickenDeluxe
  • May 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
216
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
A
Electrical electric mirror switch issue...
  • alchemist1
  • Apr 18, 2026
  • Fox 5.0 Mustang Tech
Replies
1
Views
107
Fox 5.0 Mustang Tech Apr 19, 2026
2000xp8
M
67 Mustang Ignition Switch Wiring Diagram needed
  • Michaelell
  • Sep 14, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
2
Views
399
1965 - 1973 Classic Mustangs -General/Talk- Jan 3, 2026
Michaelell
M
J
5.0 ignition wiring help
  • Jetscat7
  • Nov 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
197
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 25, 2025
Noobz347
Alternator not charging
  • SchwarzStock
  • Jul 6, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
1
Views
46
1965 - 1973 Classic Mustangs -General/Talk- Sunday at 4:07 AM
apple99Mustangdude
A
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?