Ford Mustang Forum - View Single Post - Is the gas mileage reading correct?
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post #17 of (permalink) Old 09-15-2006
S197 Member
AirGoNomyk's Avatar
Joined: Jun 2006
Posts: 496
Originally Posted by BlueStreak03
Don't disconnect the negative, disconnect the positive. The negative is the ground to chassis to the battery. Never disconnect the ground with the positive still connected.
+1 thats how I do it also

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