2008 Tiffin Allegro Bus brake lights and turn signals not working

[Kanihai]

Suddenly our brake lights and turn signals are not working. We haven't had this problem before. We've checked every fuse we can find but to no avail. Anyone know where to look to troubleshoot?

[Lt Dan]

What chassis is your Bus built on? That can make a difference in suggestions of where to look.

[cyqk]

The same thing happened on my 2009 Phaeton


Turns out the the wire bundle that runs along side the engine provides power to the circuit the powers the brake/turn


What you need is an audio wire tester


Follow the signal until the sound stops


What happen here was heat made the insulation brittle,it cracked wire became corroded and broke


Hope this helps you have no idea how much time it took for me to figure that one out!!!!!