4067 Posts
Posted - 06/18/2007 : 07:51:26
Safety Disclaimer: Modifying the wiring on your vehicle must be done at your own risk. Higher voltages give higher speeds, and is not recommended by the manufacturer. The warranty will be voided by any modification.
EDIT... image split to reduce thread "width"
First image, left side, dual 6 volt batteries, all 4 wires from the batteries go to first switch. High/Low is accomplished by switching the batteries between series and parallel. Note that when using reverse when in "high" speed, it goes back to a low speed setting by only running from ONE battery. Converting to a single battery requires rewiring to look like one of the other diagram.
First image, right side... dual 6 volt batteries, only 2 wires from batteries go to first switch. High/Low is accomplished by switching the motors between series and parallel. Easily converted to a single 12 volt battery. Most likely has an all-in-one high/low/reverse lever.

2nd image, left side, standard single 12 volt battery. Again, High/Low is accomplished by switching the motors between series and parallel. Usually an all-in-one high/low/reverse lever.
2nd image, right side, any voltage, single battery, with no High/Low switch. Typically used with a single 6 volt battery.

Side note.... seems some PW's do not come with the resistor as shown in the diagrams above. This appears to be normal. A few of us are discussing it behind the scenes. The point of the resistor is to help make the braking less abrupt.
Edited by - swhenrik on 02/26/2008 10:47:12