1997 GTX won't start

[moosebro1]

My GTX is normally quite reliable. This year even with a new battery, not even a beep after connecting the lanyard. Suggestions?

 

[Bills86e]

Clean Battery Cables. Is the small black wire connected at rear box?

Clean & dielectric grease all :
http://partsfinder.onlinemicrofiche..._oem/Seadoo_PWC.asp?Type=18&A=43&B=9&Action=O