Community Forums

0tiffin0 · 08-09-2016, 07:01 PM

our motor home has high beam/parking lights / but no power to low beams any suggestions its on a ford 550 .its a 2004 tiffin.

Skip426 · 08-09-2016, 07:07 PM

Welcome to iRV2.

Could you add the year of your Ford Chassis, to the post .

JRMEDPHYS · 08-10-2016, 06:46 AM

Quote:

Originally Posted by 0tiffin0

our motor home has high beam/parking lights / but no power to low beams any suggestions its on a ford 550 .its a 2004 tiffin.

Stupid question but have you tried a new headlamp?

The reason I ask is once I had no headlights, only high beams. I thought it must be some fuse or a broken wire, etc. Just for the hell of it, I picked up a new one and it worked fine. It just turned out that both bulbs had failed on the low beam only at exactly the same time...crazy.

0tiffin0 · 08-10-2016, 07:08 PM

I don't think my husband was clear that he checked the fuse box. The fuses are fine (not broken). Then he checked with a test light and there's no power to that fuse ...yet all other lights are working fine?
Thanks for any other suggestions...
04 Allegro/ 03 ford 550 chassis

Mekanic · 08-10-2016, 07:33 PM

Just a few weeks ago while I was in NM driving in the U-RV I hit the high beam switch and the headlights went dark.

power for headlights go though the low/high beam switch.

Turns out the 22 year old Ford needed a new switch.b Thankfully mine bolts to the floor and was $13 at Napa.

JRMEDPHYS · 08-11-2016, 07:19 AM

Quote:

Originally Posted by 0tiffin0

I don't think my husband was clear that he checked the fuse box. The fuses are fine (not broken). Then he checked with a test light and there's no power to that fuse ...yet all other lights are working fine?
Thanks for any other suggestions...
04 Allegro/ 03 ford 550 chassis

If the bulbs are good, you are down to...

1) a bad switch (you could try and replace it)
2) a bad headlight relay (again, once you locate it, you could try and replace it)
3) broken wire (have to trace the whole circuit to find the break...PITA but has to be done if you have 2 strikes)

I would try asking this question on the ford chassis forum. There are some pretty smart cats over there (subford comes to mind) who will be a whole lot more helpful.

Best of luck!