Looking for some help here. I bought a used 2005 trx 400 ex. The reverse and neutral light sensors don't connect anywhere. If I touch them to the frame, they light up. Clutch has to be engaged to start. Reverse seem to work fine without using the reverse assist switch. Several things have been half-assed. Trying to peck away and get everything corrected. Anyone know where these are supposed to terminate correctly?

 

We've got the complete diagram you need here:

https://atvconnection.com/articles/a...h-connections/