Is there an easy way to convert my 12 volts down to six volts to run my Zodi propane water pump for an external shower? I have the propane hooked up to it and all I need is power. It uses four D size batteries (1.5 v ea.). Would it hurt the motor to run at 12v? It sure hauls a**
You may ask why? I need a way to take showers without using the TCs water.
2006 Chevrolet 3500 HD 4X4 dually, crew cab.
6.6 diesel, Allison trans. Air bags.
2011 Lance 992 duel pop-out, 2200 gen, 135 watt solar panal, Yakima skybox.
By knowing how many amps the motor draws, you can buy a 5 or 10 ohm 10 watt resistor for a few dollars, and put that inline with the 12 volt feed to the motor, and then you will have "About" 6volts at the water heater pump.
You really don't need to care if the power is exactly 6 volts, just do not want to over apply voltage and burn out the motor to quickly, or apply 5 volts and have it not pump very well.
Or just buy a couple of 5 ohm 10 watt resistors, and install two of them, try it, then measure the voltage while the pump is under load. If the voltage at the first resistor is say 8 volts, and the second one is to low, then remove one resistor and test the voltage again. Due to higher amperage the second test, the resistor will be dropping more volts, and might turn out at closer to 6 volts.
If the resistors get to hot, then run 4 of them, in strings of two, and then two pairs of two in a row. Here is a place to get them for $.64 each. It is the first place that came up on Google, I have no idea if shipping will be $25 or not, and have no connection with them. http://www.parts-express.com/pe/showdetl.cfm?Partnumber=016-5