crane on my 5 ton

[M938a]

Recently acquired this crane believed to be a Grove Material Handling crane off a 8x8 Oshkosh but do not know any model numbers or anything have yet to be able to find a plate or any information on it looking to try to figure out how to properly where the main positive and negative into the control box and how to hook up the hydraulics

 

[Lukes_deuce]

Your best bet is to look up the Hemtt manuals. I have searched and there is not that much information on this particular crane from Grove. It is 24 volt, and i think closed center. There are lots of threads on adding these cranes onto other military trucks. I suggest a beefy subframe.