Head/Fog Lights, Turnsignals, Backlights Inop

[mjurgen889]

I have a 05 Itasca Horizon. Today I pulled it from storage and the following lights are inop:

Headlights (high and low beams)
Fog lights (dedicated switch or by pulling out on headlight switch)
Turn signal lights either direction
Instrument panel backlighting

The Fog light switch has a lighted ON indication in the switch. It doesn't illuminate when the switch is selected ON. The rear brake lights work just fine by the way.

None of the above lights work from ANY power source. I've checked fuses (just to be sure), but none are melted. I did use battery boost earlier today - could that have possibly done something. I'm at a total loss and me and the Mrs. are supposed to be driving to Florida on Monday morning ... maybe.

I'm open to any ideas!

Mike

[lajuene]

There may be more fuses. My 2004 Vectra has several places with relays and fuses. I'd check the wiring diagrams at the Winnebago site.

[bucks2]

Perhaps a silly thought, but you are trying them with the engine running? Mine won'd work unless the key is is the run position.

[mjurgen889]

No, it's a good question - gotta think out of the box when a problem occurs. I have tried every combination - key/no key/engine off/engine on/acc position. No Luck!

[Dacotah]

What chassis is your coach built on? it is hard to help without knowing. DACOTAH

[mjurgen889]

It is a Freightliner.

[Fred Cooper]

I'd check for fuses first. Then I'd try substituting a known good relay for the relays that Freightliner uses for control of lighting circuits. On my coach, they are in a front bay driver side. I'd expect yours to be somewhere near the front of the coach.
Fred

[bigdog]

I'd call 1-800-help and those boys can probably give you an answer pretty quick and walk you thru any troubleshooting you need. I had a headlight out and couldn't figger it out and called and found out it was a relay going bad and he had walked me right into it.

[mjurgen889]

Solved! Low chassis batteries caused the Inpower light module to open.
Replaced batteries, reset light harness on module and relay closed. Drove 500 mi yesterday without a hitch. Thanks to all, especially to the member that
mentioned this module!

Great folks, great advice, great forum!!