I'm looking at purchasing a 2005 M105x. The dash light for the 3 point hitch is on at start up and then turns off when operating the hitch. The seller said this might indicate a problem but doesn't know. Is this normal? I thought it was the other way around, off unless operating the 3 point hitch? Or that the light should be off unless there is a problem? I don't yet have an owners manual to diagnose and am hoping to snag this tractor if this light isnt a big deal or is normal.