Ground testing M151 engine

[agwrangler]

Ok ladies.... I am stuck. I need to do a compression check on the MUTT engine I have mounted to a pallet. I need to get the 24 volt hookup. I got the positive of one battery to the starter. I have the negative of the other battery to a ground point. Now.... Obviously I cannot just jump the two batteries neg to pos. There has to be some sort of switch in the middle of some sort..... So what do i do here? NEVER tried to do this to a 24 engine before. cant find info anywhere about it. Any help is appreciated.

Sean

[Mark]

you hook the two batteries together in series to get 24 volts,connect the ground cable to engine block, the positive cable to a switch terminal, the other side of the switch to the starter, close the switch to run the starter,open the switch to stop it.

[agwrangler]

Thanks for the reply. I figured it out. I was being an idiot. I just used the ground to tough to the engine and crank it for a few revolutions. Then took it off engine to stop it. Idiot. Sometimes I amaze myself at how stupid I can be.

[rickf]

You asked the question which shows that you are in fact NOT stupid!