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Headlight Switch Electrical Question

  • Thread starter Thread starter 89 fox 351
  • Start date Start date Apr 10, 2020
8

89 fox 351

Member
Mar 8, 2020
10
1
13
Texas
Apr 10, 2020
#1
  • Apr 10, 2020
  • #1
Let me start by saying testing this would be much easier if the car wasn't in pieces. The dash and wiring harness are separated in my living room. I'm making my own wiring harness, with minimal wires for my custom street build.

Does anyone have a GT headlight switch that can do a test for me? Its an 89 GT. The last time I drove the car everything worked fine (that was 12 years ago) however I'm testing continuity on the headlight switch, and it seems that I'm getting continuity between one terminal that should be power, and one that should be ground. I'd guess the switch went bad sometime from sitting, but just want to make sure.

On the back of the switch, it is getting continuity between terminal labeled "G" and "I".

A more in depth look shows the following:
Terminal "G" as Circuit #19- Instrument Panel Lamps Feed
Terminal "I" as Circuit # 57- Ground Circuit

 

Blown88GT

Founding Member
Nov 13, 1999
2,283
524
164
Palm Beach Gardens, FL
Apr 11, 2020
#2
  • Apr 11, 2020
  • #2
p.119, switch is good, see chart.

1988 Mustang Electrical & Vacuum Troubleshooting Guide (EVTM)

File is too large to upload. Here is link to it on my Google Drive. View: https://drive.google.com/open?id=1on5czXKmpETzxUggWTGtoUuVkJT2UUxN
www.stangnet.com
 
Reactions: jrichker
8

89 fox 351

Member
Mar 8, 2020
10
1
13
Texas
Apr 11, 2020
#3
  • Apr 11, 2020
  • #3
Awesome. Thank you
 
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