1997 Mack RD 690 Wiring digram - BigMackTrucks Feb 22, 2013Hello anyone have a wiring digram for 1997 Mack RD 690 . Any help is appreciated. Mack wiring diagrams for ch 613 1997 low air buzzer on all wwwa›Forum›Heating & CoolingMack wiring diagrams.. Share on Facebook; Share by Email × Question about Heating & Cooling. Open Question. Mack wiring diagrams for ch 613 1997 low air buzzer on all time. Posted by Anonymous on Jul 11, 2013. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered.Hi there,
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Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US. Here's a link to this great service Good luck!If you haven't removed the wires yet don't. The best way to replace ignition wires is to remove ONE at a time and replace with a new one before moving on to the next. That way you won't get the firing order mixed up. Hope this helps0bad connection - check for corroded contacts on connectors or bad ground0