[Tiara Open] 2001 3500 OPEN Cummins

[Crown Royal]

Thanks for the info, everything seems to be tied together both gauges come on when either switch is turned on and when either engine is run they both show the same charge rate. I will try to confirm the emergency switch is not connecting and test alt.output. My schematic is not correct as it shows a different charge system so no help there and being in Mexico tough to find knowledgeable service techs.
Thanks