I have a 2003 Isuzu(diesel) Trugreen truck I bought and I am fixing it back up to use as my spray truck. Here's the question. The truck came with just a 24v battery instead of two 12v which is what it is setup for. I replaced the 24v with two 12v like it is suppose to be and they are hooked up parallel(pos to pos and neg to neg). I am still getting 24v back at the reel motor. The reel motor is a 12v as it should be. My solenoids(2) are also 12v each. I need help on how to only have 12v at the motor when its in use so I dont burn it up. Am I hooking it up right or should I hook up the batteries in series? If so how do I do that? HELP!