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

Mystery Transmission Part? What to do with the wires? Help.

  • Thread starter Thread starter Pbum5
  • Start date Start date May 3, 2005

Pbum5

Member
Oct 27, 2004
515
0
17
Minneapolis, MN
May 3, 2005
#1
  • May 3, 2005
  • #1
Does anyone what this part is?

It connects to a set of wires out the firewall. I think it has to hook up to the tranny somehow.

I have an after market shifter on my Top Loader 4-speed so the linkage would not work with a stock (reverse light switch? Neutral safety switch?)

I do remember I tried to unhook it years ago and the car would not start. Then I hooked it back up and all was well. It has just been sitting in the engine bay not bolted to anything but still connected to the wires that lead into the firewall.

Now the wires to it are in bad shape so I was wondering.

- Can I just cut and cap the wires?
- Or do I cut the wires and connect them together?

Can someone tell me what this is and what do with it?

Thanks.
 
S

STSFCTN67

Member
Feb 5, 2003
450
0
16
Denver, CO
May 3, 2005
#2
  • May 3, 2005
  • #2
That is your reverse light switch. When you disconnected it from the loom you also disconnected part of the wires (that are now bypassed because you have a 4speed) that go to the neutral safety switch for automatic cars. Use your test light and detrmine which part of the loom is for the reverse light switch and the other side make a kill switch out if it.
 

Pbum5

Member
Oct 27, 2004
515
0
17
Minneapolis, MN
May 3, 2005
#3
  • May 3, 2005
  • #3
Thanks for identification of the part STSFCTN67.

A kill switch is a great idea.
But if I just want to get it going again should I…

Cap off OR Connect the 2 wires that lead to the switch?
 

84convertablegt

New Member
Nov 6, 2004
589
0
0
Columbus, OH
May 3, 2005
#4
  • May 3, 2005
  • #4
if you want the car to run, you bridge the 2 terminals to complete the starting circuit.
 

shotsy

New Member
Apr 8, 2005
233
0
0
Oklahoma City
May 6, 2005
#5
  • May 6, 2005
  • #5
Pbum5 said:
Thanks for identification of the part STSFCTN67.

A kill switch is a great idea.
But if I just want to get it going again should I…

Cap off OR Connect the 2 wires that lead to the switch?
Click to expand...

Should be red with a blue stripe, clip splice start!!!
 
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
254
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
27
Views
845
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
Electrical Going crazy trying to identify burnt and disconnected wires 83 GLX5.0
  • x_man586
  • Jun 25, 2025
  • Fox 5.0 Mustang Tech
Replies
6
Views
415
Fox 5.0 Mustang Tech Jun 26, 2025
AeroCoupe
2
Electrical mayhem
  • 2000ElectricGreen
  • Mar 13, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
288
1996 - 2004 SN95 Mustang -General/Talk- Mar 24, 2026
2000ElectricGreen
2
F
Electrical From scratch: alternator wiring
  • fox racer v2
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
0
Views
587
Fox 5.0 Mustang Tech Jun 23, 2025
fox racer v2
F
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?