fastboater Posted September 17, 2021 Share Posted September 17, 2021 I did a transmission swap from a Mack 5 speed to a Eaton 8LL. In doing this I’m going from a mechanical drive speedo to electric. Wanting to know if anyone has a wiring diagram for speedo to sensor. 5 wires coming from speedometer to the 2 wires on sensor . thanks Quote Link to comment https://www.bigmacktrucks.com/topic/68178-r-685st-transmission-swapelectric-speedometer/ Share on other sites More sharing options...
theakerstwo Posted September 17, 2021 Share Posted September 17, 2021 Class 7-8 Trucks (ametekvis.com) Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/68178-r-685st-transmission-swapelectric-speedometer/#findComment-480063 Share on other sites More sharing options...
78KWguy Posted November 25, 2021 Share Posted November 25, 2021 On 9/17/2021 at 7:01 AM, fastboater said: I did a transmission swap from a Mack 5 speed to a Eaton 8LL. In doing this I’m going from a mechanical drive speedo to electric. Wanting to know if anyone has a wiring diagram for speedo to sensor. 5 wires coming from speedometer to the 2 wires on sensor . thanks I'm just throwing this out there...I restore vintage KW's. In two of my '78 A models, I went to a GPS driven speedometer from speedhut.com. They are fantastic in my opinion, because they don't care about component changes, tire sizes, or anything because they're satellite driven units. I LOVE them. And for around $280.00, they're less than OEM ones. Highly recommended for this exact type of deal. Quote Link to comment https://www.bigmacktrucks.com/topic/68178-r-685st-transmission-swapelectric-speedometer/#findComment-483471 Share on other sites More sharing options...
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