easy direct install onto a HM126, bolts are a little hard to put on the back, as for wire hookup, in my case use the brown wire to go to the red wire, so it will go up for you. you may need to calibrate the power unit, I did, start by lowering the blade down to 12 inches, press the zero button for about 7 seconds, release it, then press it again. mine works right on the money.