slingblade Posted June 10, 2014 Share Posted June 10, 2014 i bought this superliner and love it and have fixed most of the electrical issues with it except for the jake switches,apparently when the assessory relay went bad the previous owner re wired alot of stuff to get things working again,the jake was wired directly from the hot on top of the strip on the drivers side fire wall through the throttle switch,then to the solenoids,it was also wired into the toggle switch for on/off and the existing wiring is still there behind the panel and the diagram for the RD on here is close but only shows hi/low and the colors are different,,if someone has it or knows the link where i can pull it off the net id appreciate it,, Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/ Share on other sites More sharing options...
gearhead204 Posted June 10, 2014 Share Posted June 10, 2014 you just need keyed power to the on off sw. then the switch should be interrupted by the throttle sw. and the clutch sw. then the 3 pos.sw should be center head pos.1 frt. &rear.pos2 and all3 pos3 this should be correct for a cummins eng. Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/#findComment-248728 Share on other sites More sharing options...
gearhead204 Posted June 10, 2014 Share Posted June 10, 2014 also if you follow the RD diagram and look it should show optional wiring, but I believe the dynatard or jake power supply are the same. but I believe it requires a relay it should be labeled in the fuse /relay box Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/#findComment-248730 Share on other sites More sharing options...
slingblade Posted June 10, 2014 Author Share Posted June 10, 2014 thanks guys,found the relay searching out why the brake lights stayed on all the time,the jake relay was plugged in where the brake realy goes,,im going to go back through the wires and label them for their color and also re do the wiring on the motor to correct it,, Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/#findComment-248780 Share on other sites More sharing options...
slingblade Posted June 13, 2014 Author Share Posted June 13, 2014 found a helpful PDF at jacobsviehiclesystems.com with tech info and diagnostics Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/#findComment-249011 Share on other sites More sharing options...
slingblade Posted June 27, 2014 Author Share Posted June 27, 2014 and wa la,,all 3 settings work,,im a happy guy Quote Link to comment https://www.bigmacktrucks.com/topic/36010-3-stage-jake-brake-wiring-in-85-superliner/#findComment-250681 Share on other sites More sharing options...
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