[Sergio]

Both of the Solenoid big posts are Positive, but yes, it goes on the side where the pack positive battery cable is connected.

You also connect the band/stripe side of the Regen diode on that same post.

The 10ga black wire goes to Controller B-, it is the negative wire from charger receptacle.

Put the pack negative cable first on Controller B-, then place the other negative wires on top.

On Controller B+ put the motor cable first and then the cable from Solenoid on top.