Trautma Posted March 26, 2014 Share Posted March 26, 2014 Hello I am installing a steinbauer chip on my 2003 mack ch613 with E7-460p engine. Was wondering if all of the unit pumps have the same polarity, as in left post negative right post positive. Having a little trouble figuring out where wires go and want to be sure. Thanks! Quote Link to comment Share on other sites More sharing options...
Mackpro Posted March 26, 2014 Share Posted March 26, 2014 As far as the EUP itself, I dont think there is a + and -. It just makes a simple circuit and activates a electro-magnet in the EUP. But all the harnesses are laid out that way. I one time reversed the wires on a EUPto see what would happen and it still fired with no miss. But I could be wrong. Lol Quote Link to comment Share on other sites More sharing options...
staxx Posted March 26, 2014 Share Posted March 26, 2014 Quote Link to comment Share on other sites More sharing options...
Trautma Posted April 8, 2014 Author Share Posted April 8, 2014 Finally got chip installed right. Happy with results so far, I'm pulling super b grain trailers and on one hill I pull often went from cresting hill at 50km/h before to 70km/h now with chip installed. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
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