Forum Discussion

kmb1966's avatar
kmb1966
Explorer
Jul 23, 2018

Dash A/C blows out of defrost when climbing or head wind

My dash a/c blows cold air, but at times when climbing hills/overpasses or traveling in a head wind, the air will decrease out of the vents, and blow out of the defrost vents. Upon slowing down, the ...
Class A
MrWizard's avatar
MrWizard
Moderator
Jul 24, 2018
get the Ford f53 chassis manual
Look for the ignition wiring
Look for ignition#2 or aux wiring from the ignition switch
Trace that to the fuse panel and tap/connect to an output from the fuse panel that uses one of those wires

About Motorhome Group

38,705 PostsLatest Activity: Jan 20, 2025