Go to the archives in the Winnebago Industries web site and look for the 2003 manuals, they are available on line free. The fuses and flashers will be listed in the first section titles, "Automotive".
The House schematics require a bit of getting used to but you will find everything there.
There is also a catalog of all the parts in the house. It has a description, location in the house and the part number. There is a parts house just down the road from Winnebago that carries the parts, Lichtsinn.com/Winnebago/parts.
The turn signal switch, if it is bad, is about $125.00.
"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson
David Bishop
2002 Winnebago Adventurer 32V
2009 GMC Canyon
Roadmaster 5000
BrakeBuddy Classic II