PWM CONTROLLED FUEL PUMP---- Ok friends. I knew when I started this little project I would end up here asking for help. I have read the stuff that has been posted and know there are a lot of places we can go wrong with the wrong PWM. I thought it was said that the Reese units were the ones that work. I bought a Reese Towpower Brakeman Timed Compact
I have two slide bar adjustments on the controller. I set the one on the face that determine how much volts goes to the brake to MAX. The one on the side I’m not sure about so I have tried it in both positions. Then I crank it and nothing happens.
OK WAIT!!! I just came back from the truck. There is a THIRD slider switch on the front. It is spring loaded and goes to the “off” position unless you press it down then it goes towards “Max volts” as determined by the other slide switch on the face. So with the slide switch at Max and push the button to Max the truck will start. Now if I let off the Push button switch the engine will slow down until it dies. Or starting again with one in Max and push button at Max, it starts and then with the slide switch I can control the speed until it dies.
So what should I do? Tape the push button switch to max and leave it so I can run off the slide switch. Or put the slide on Max and when I need hybrid, I start pushing the button to add dyno? Don’t know how much you use these things so which would be most practical?
Now that the controller is working got to go back an see how to hook it up to run on straight dyno. TomC