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Old 09-01-2014, 10:23 AM   #1
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Winnebago Owners Club
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No brake lights or rear turn signals

Have a 2005 Winnebago Vectra. Rear running lights come on but no turn signals or brake lights. Front turn signals all work. Have checked all fuses and light bulbs. All are ok. Could turn signal controller be bad?

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Old 09-01-2014, 10:39 AM   #2
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Location: Powell River, B.C.
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Welcome to iRV2.
Many chassis are set up with a relay & fuse location for the rear lighting and trailer connector near the back of the coach.
What chassis is your coach built on ? Freightliner ?
Have you checked that the wiring connectors at the base of the steering column are all properly seated ? Tested there for output from the signal light switch & brake lights?

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 09-01-2014, 04:23 PM   #3
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Originally Posted by tw0Bears View Post
Have a 2005 Winnebago Vectra. Rear running lights come on but no turn signals or brake lights. Front turn signals all work. Have checked all fuses and light bulbs. All are ok. Could turn signal controller be bad?
Your coach and its wiring, should, (I say "should") be pretty darn close to our '04 Itasca Horizon 36GD with the 330HP CAT. Ours is on a Freightliner chassis and, if I'm not mistaken, yours should be too. Now, if, yours has the same wiring installs and, locations, then I'm pretty sure your relays and fuses etc. for the turn signals could, or should be, in the left front compartment, just in front of your left front tire. It all depends on if they setup yours the same way as ours.

I just went out and looked at mine and, opening the compartment door reveals all the resettable circuit breakers and, a fuse box that contains fuses and relays. One of which is labeled, ""Turn signal Power". Now, just what that means and, what it applies to, I'm not sure of. So, maybe it's a start for you to diagnose your issue.

Now, the fuses and relays for the trailer plug, are located in a completely different location. On mine, they're behind the louvered panel, that is over the dash A/C condenser at the left rear of the coach. Not sure if yours are there or not. But, normally, those fuses and relays don't have anything to do with your coach lights, only the wires going to the trailer plug on the coach. Hope some of this helps. Good luck and, please report back on what you find is the problem so that others may learn.
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
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Old 10-22-2015, 02:05 PM   #4
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Location: Buda, Tx
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I have a 2003 Itasca Horizon 39QD, Freightliner chassis, cat330. I had a no brake or right turn signal at the trailer pigtail. The coach lights were fine. The fuse box for the trailer wiring was found in a tray behind the panel above the belly a/c on the passenger side. I found a blown
20amp fuse, back in business. I had called freightliner help desk and Lamont told me it would be with the Allison transmission ECM and another square relay box. The trailer wiring fuse box is about 4" square by 2" deep, with a pop-off cover. There will be about 6 relays and a row of fuses. They are well marked. I suggest turning on your emergency flashers, go to the rear of the coach and listen for the relay clicks. That would have been much easier to find if had done that part. Good luck.

Pauly and Mike Littrell
Buda, Tx
2003 Itasca Horizon 39QD
Pauly and Mikey
2003 Winnebago Itasca Horizon 39QD
Buda, Tx.
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brake, brake lights, lights

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