New Holland 6610S key switch

I had to replace the key switch on my 6610S 2 times. Each time I went to Tractor Supply & got a 4 prong switch with acc., bat., st., & ign., on it when I brought it. A buddy of mine is a mechanic. He said it was the key switch eac time. He said the switch wasn't water proof. The 3rd time I went to a NH dealer. They said I need key switch part #82849085. It is a 5 prong switch with 1,2,3,4,&5. inplace of acc., st., bat., & ign. The old switch got a brown wire going to bat. It got a light yellow wire goig to acc., It got a brown with red stipe wire going to st.. It got a big red wire & a light yellow with green stripe wire going to ign.. My problem is I need to know what wire on the old switch where it goes to on new switch. Thank you.