hi, am not an expert or a mechanic, but on my post, (just joined today feb24th), i mentioned how i repositioned and upgraded my battery to a 12v car batt, instead of the weak and expensive OEM's, i placed it under the driver seat and bought thicker cables, the red i ran it thru the floor and up to the front firewall where the solenoid and fuse is (i deleted the plstic box), the red went there and the black i got a 36 inch and bolt it to the frame, cart starts good no issues, 2010/11 hisun 500cc carburated,. just an opinion, good luck.