Electrical Grounding Gremlins
In a fiber glass coach and a steel chassis its not surprising that poor grounding causes many problems...non-retracting steps etc. I'm currently dealing with multiple issues that are probably poor grounding related.
Old but related. Couple of years ago, bathroom light was dim. Multi-meter indicated leads to light had half the normal 12 volts. Grounding the light to a nearby Air conditioning frame restored 12 VDC and a bright light.
Two of my rack and pinion slides are moving much slower than when new. I've assumed its a roller issue but could be low voltage.
A week ago, my defroster fans ran at half speed when both on, normal speed when one at a time. Scratching my head.
Yesterday, after parked 10 days (with inches of rain in Iowa) pre-underway startup, jacks up...all systems go. When I disconnected shore power and started to move, my backup monitor went blank, my dash A/C fan died, lost control of my power mirrors? Radio, CB, Gps and all other dash instruments continued to work fine.
Since our planned drive was only 30 miles with another rig in company and essential systems working fine, I elected to continue and trouble shoot at next stop. I reasoned that it had to be a grounding problem but where are the ground points? 15 miles down the highway (very windy day) the problem disappeared... all systems back to normal.
Are the grounds of the AC and DC systems both bonded to the frame/Chassis and essentially all metal frame parts? If so where? Right now there is no problem (other than my defroster fans)to investigate!
Where should the Exorcist begin?
Old but related. Couple of years ago, bathroom light was dim. Multi-meter indicated leads to light had half the normal 12 volts. Grounding the light to a nearby Air conditioning frame restored 12 VDC and a bright light.
Two of my rack and pinion slides are moving much slower than when new. I've assumed its a roller issue but could be low voltage.
A week ago, my defroster fans ran at half speed when both on, normal speed when one at a time. Scratching my head.
Yesterday, after parked 10 days (with inches of rain in Iowa) pre-underway startup, jacks up...all systems go. When I disconnected shore power and started to move, my backup monitor went blank, my dash A/C fan died, lost control of my power mirrors? Radio, CB, Gps and all other dash instruments continued to work fine.
Since our planned drive was only 30 miles with another rig in company and essential systems working fine, I elected to continue and trouble shoot at next stop. I reasoned that it had to be a grounding problem but where are the ground points? 15 miles down the highway (very windy day) the problem disappeared... all systems back to normal.
Are the grounds of the AC and DC systems both bonded to the frame/Chassis and essentially all metal frame parts? If so where? Right now there is no problem (other than my defroster fans)to investigate!
Where should the Exorcist begin?
