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what happens when you change the fuel filter with bad LP

You can make sure your OPS works by checking for voltage on contact G of the OBD port when it is running. You can monitor it while driving to ensure the OPS is not failing intermitently.
 
buddy said:
You can make sure your OPS works by checking for voltage on contact G of the OBD port when it is running. You can monitor it while driving to ensure the OPS is not failing intermitently.
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This got me to thinking I have a 12V green LED "peanut light indicator" on my gauge pod, glows green when either lift I have selected on is powered up, one could do same thing this pin, tap the wire/pin on backside of the DLC connector so it powers the LED when lift is getting it's power feed. I would have proposed it earlier but I was not positive there pin was hot when engine was running, since I did not have access to a OBD-I truck to check it with. Thx for heads up Buddy.
 
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