changing wire harness on chasis volvo vnl

[Wiseman]

(08-18-2016 )ktbtrucking Wrote:  regarding wiring do i need to have it working:
-for dryer
-for leveling valve

Dryer wire plug is for heating element to prevent eventual freezing in winter. So now and only temporary doesn't need power to it . But only temporary!!! Till you get it fixed properly!

Leveling valve doesn't have power to it . Is the suspension dump valve that have . It dumps air if "told" so with switch on dash by giving power to it . It's nice to have it working for coupling/uncoupling or go under low bridge. Shouldn't say the last one .