ok, so I swapped out my final drive on my rt, I had a spare off a gs i bought for 350 on ebay.i had no problems with mine but just wanted to try the lower gearing. went for a test run everything great I had a little more low end. then i noticed the gear indicator not working. when back at the house I disconnected and grounded the positive battery wire, now everythings ok. WTF , any ideas? I also cleaned the connection on the tranny but no difference till the battery disconect.