I need a wiring diagram for a 2010 john deere gas tractor.

SOURCE: I need a diagram for drive belt configuration on a

Here is a link to JD manuals. Don't know if this will help or not
Kurt
http://www.deere.com/en_US/ProductCatalog/HO/servlet/servlet/com.deere.u90785.cce.productcatalog.view.servlets.PublicationsListServlet?equipID=16507&language=english&searchCriteria=l120&exactModelSearchFlag=off&orderBy=pubType&tM=HO

SOURCE: 3020 carburetor ? john deere gas tractor, 3020

those carbs are real simple you will not have any problem

SOURCE: ELECTRICAL PROBLEM

Can't get you a diagram but i can tell you most electical problems on these tractors can be solved by replaceing the key switch/modual or cleaning corrosion from fuse holders.

SOURCE: I need a drive belt diagram for a 1642 Scotts John

Try this site:
http://outdoorpowerinfo.com/repairs/

SOURCE: need mower deck belt diagram for L-130 John Deere

I have found the manual at JD's website. Click the link and scroll down in the left column until you find the heading for replacing the belt. I contains big, clear photos. Here is the link:

http://manuals.deere.com/cceomview/OMGX21647_K3/Output/Index.html?tM=HO

You can copy it into your browser window or type it in. I sure hope this helps you out. If I can be of any further assistance, please let me know:)