hooking up OBD 1?

1991 FORD F-150
120,000 MILES • 4.9L • 6 CYL • 2WD • AUTOMATIC
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AHKALISH
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  • 1 POST
Do you need to have a wire between the OBD1 and the battery?
Jul 7, 2023 at 9:28 AM
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MATHGEN
  • ✓ASE Certified Mechanic
  • 128 POSTS
  • ASE Certified Mechanic
No, you shouldn't have any need for separate wiring to the OBD test connector.
Are you using a scanner?

Here is a guide for retrieving codes without a code reader:

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

I hope this helps.
Jul 7, 2023 at 11:19 AM
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