Hooked up back-up battery to wiring harness andalso installed diode/resistor for B/U battery charging. Specified resistor is 680 Ohm, but this is way too high and the charhing current would be in the milliamp range. I put 2 680 Ohm resistors in parrallel configuration which will give me 340 Ohm. I will change this at a later time. Pointed this out to Helicycle Ventures and they now specified the resistor at 2 ohm.
