I bought a JM Fab with an Odyssey pc 925 battery kit. It says everything you need for install. Which was battery, New aluminum tray and tie down, and posts and screws. I cant get negative wire to battery and keep it at original ground no matter how hard I stretch it. Not even close. Didn't Come with instructions and thought someone would know or can help with advise. Website said to keep original grounds so that is where I got that from.

 

I would contact Jim from JMF.. He is very responsive and I am sure he would help you out..