Originally Posted by jab
The Nite Hawk charger is actually pretty simple as chargers go; it's just a two-stage charger.
The one on my bike has wires coming from my rim generator to a full wave bridge, then a 1000 micro-farad cap, and finally a 6v zener. That sends power to everything, including the battery. Now, *that's* simple!
Originally Posted by jab
Out of curiosity, where did you tie into the system, and how much current does your brake system pull?
If they've got some fancy digital brightness control, it could be running at high frequencies, and it might be sensitive to additional load... particularly reactive loads.
I tied into the NH cord just "North" of the battery and "South" of the cable split where one leads to the power switch and the other leads to the light. It's pretty simple right there with two wires. I put a connector there and just added my wiring to the "North" side of the connector.
As for my power... ummmmm... six LEDs at probably about 0.230 milliamps each, all in parallel with a 24 ohm resistor in series with all of them. If I remember my basic electronics, that should be about 0.725milliamps added into the circuit. That's the tail/brake lights. If I add in the turn signals, that's eight more LEDs flashing at a time, similar setup.