Jun 7, 2020 #1 MA Maggie01 Advanced Member Joined Feb 6, 2020 Posts 77 Location East Texas There is a switch on the dash that says Booster Pump. What is it for?
Jun 7, 2020 #2 Drew Bru Senior Member Joined Aug 29, 2015 Posts 1,445 Location Grayson County, VA It's a booster pump to help better circulate coolant through the rear bus heaters.
Jun 7, 2020 #3 OP OP MA Maggie01 Advanced Member Joined Feb 6, 2020 Posts 77 Location East Texas Ok, thanks very much! I'm still trying to figure my bus out.