:welcome:Sorry I can't help with your question .
Maybe a moderator will move this post to the spot where it will get more views.
Some members don't read the new member check ins.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Did you check the Winnebago website? They have lots of wiring diagrams for the Itasca rigs there too. Wiring Diagrams I don't know if they go back far enough online, but you may be able to at least get some info and/or a number to call them at.
The Winnebago online wiring diagrams only go back as far as 1990, but if you give Winnebago Service Administation a call at (800)-537-1885 (have your Winnebago Serial Number handy) they may well be able to provide them to you.