barry123 Posted October 20, 2013 Share Posted October 20, 2013 Hi can someone help me, I'm trying to activate the exhaust brakes of my Mack Vision but there is a switch on the dash that doesn't work. It could be the exhaust or engine brake not too sure the switch has got three steps. Could it be an electrical issue?cheersBARRY Quote Link to comment Share on other sites More sharing options...
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