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Old 11-08-2015, 04:03 PM   #1
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Join Date: Apr 2015
Location: Welllington
Posts: 15
Brake Light

Has anyone out there experienced the brake light and horn going off when you are going down the road or maneuvering around a corner? The first time it did it we were going around a corner at a safe speed, but now it does it when we are going down a straight road. I have no idea what the problem may be. I own a 2015 Jayco Seneca HJ.

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Old 11-08-2015, 05:48 PM   #2
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Join Date: Mar 2015
Location: Port Orchard
Posts: 1,167
Ouch, you've got some bare wires mixing it up somewhere. Time for some serious exploration of wire bundles and looms, pushing here and pulling there to see if you can determine where the short is. Problem could be under the dash, under the hood, or any place that 12VDC could run into your horn and brake wiring. Could be anywhere around the fuse blocks too which are also under the dash or hood. Could be an interesting problem for either you or Mr. Jayco to find.

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Old 11-10-2015, 08:23 PM   #3
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Location: Grove City, OH
Posts: 235
I'd take it in to your local Freightliner shop and have them look at it. That definitely shouldn't happen.
Ty & Deb Montag
Columbus, OH
2015 Jayco Seneca 36FK
2014 Honda CR-V toad

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Old 11-10-2015, 11:20 PM   #4
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Join Date: Dec 2014
Location: North Central Texas
Posts: 382
On diesel pushers the brake lights can go on when the exhaust brake is on. Not sure how the Seneca's M2 chassis works re this. The horn is mounted near the firewall on the PS. Check the wires there too.

2015 Jayco Seneca 36 FK
2016 Jeep Wrangler Unlimited tow
2010 Tiffin RED 36 QSA - gone
2011 Monaco Monarch class A - gone
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