95HeavyMack Posted May 8, 2013 Share Posted May 8, 2013 Would anyone know the switch settings on the back of the speedometer for a 1995 Mack RD688S? If you would need more information on the truck please let me know.ThanksMike Quote Link to comment Share on other sites More sharing options...
mackcl96 Posted May 12, 2013 Share Posted May 12, 2013 Would anyone know the switch settings on the back of the speedometer for a 1995 Mack RD688S? If you would need more information on the truck please let me know.ThanksMikeDealer will tell you ,,,,,,,,or if you have the build sheet it will be on the last page Quote Thanks for hearing me out.You can have the soap box now---------JIM Link to comment Share on other sites More sharing options...
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