Spicewood96ch613 Posted November 12, 2014 Share Posted November 12, 2014 I'm looking for instructions to reset the dip switches on my 96 CH 613. Just got this truck and the speedo reads 65 when it's going 70. Will the maximum road speed change when the speedo is corrected or is that function based on the electric pick up and not the gauge? Quote Link to comment https://www.bigmacktrucks.com/topic/37710-resetting-the-speedo-after-changing-to-larger-tires-and-wheels/ Share on other sites More sharing options...
Dirtymilkman Posted November 16, 2014 Share Posted November 16, 2014 If its vmac I believe you can set the revs per mile with a computer at a mack shop Quote Link to comment https://www.bigmacktrucks.com/topic/37710-resetting-the-speedo-after-changing-to-larger-tires-and-wheels/#findComment-266886 Share on other sites More sharing options...
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