I have not done a whole lot with circuits before, but consider myself a fast learner. I have a small circuit that I am trying to figure out. I have one already, but it is so messed up with glue and jbweld I can not figure out what is going on with it. It is a very simply circuit I believe. I would rip apart the one I have, but hate to ruin a good unit. I just would like to create a spare. So, to describe what I have. It consits of 5 wires (3 inputs and 2 outputs) and a perforated circuit board. Wire 1 entering is a constant 12V positive. Wire 2 is a ground. Wire 3 taps into an existing wire that is connected to a solenoid. It gets its voltage from this solenoid signal wire. The 2 output wires are: Wire 4 is a ground Wire 5 is a positive wire to connect to an identical solenoid described in the other set of wires. The 2 solenoids have to have exactly the same voltage for the system to work correctly. The ouput positive can not feed back into the input positive so a diode is used which I can see. Also, I can see a adjustable voltage regulator I believe. This is about all I can see on the board. Does anyone have any ideas as to where I can start? Any help would be much appreciated. I know this drawing looks terrible but I tried. R1 and R2 must have exactly the same voltage. The voltage of R1 changes all the time. So, R2 needs to change along with R1.