Last year I blew my PTO bearing in Montana on my 06 RMK 700, 144. Found after afterwards this was a common problem with these sleds amongst other problems. This fall I started to order new parts, I ordered a brand new case, new updated crank shaft that actually is for the 900 RMK, weisco pistons and sent in jugs to be re-plated to factory size. after putting the engine back together to factory specs and lots off new little parts here and there I noticed that while removal of the engine thatl 3 of the fuel injector wires actually just pulled out of the plug that goes into the ECU. Now I was able to find out from my shop manual that there are only 2 wires, a pos and a black/Neg for each of the injectors from the ECU to the injector. I know which injector bundle of wires go to bundle from the ECU because they are all labbeld but as far as a positive and neg does it matter which way I was to hook up the injector? Does polarity matter for a injector? I hooked up a 6V battery to each of the injector wires, and no matter which combination you charge the wires, pos/ neg/ neg/ pos, you can hear the injector open and close. put a ohm meter and once again, I got 12.5 ohms from each of the injectors no matter which wire I used as the hot wire. does anyone know if it matters?