[quote name='rustech' date='Mar 28 2005, 01:23 PM']Dave, what do you think of wiring it something like this?
[edit: I guess I could have tide in the remote (resistor) feed after it goes through the highlight switch so the remote doesn't even have power until it needs it.
[right][post="2470"]<{POST_SNAPBACK}>[/post][/right][/quote]
That could work. Just to be clear, the wires that goes to the #86 pin doesn't actually contact the ground wire, that is just a coincidence of a quick sketch. Also, valuing the resistor to drop to 9V would require you to take measurments of the current draw of the garage transmittter and then running the calculation (stolen from my post about LED's):
R =(Vs -Vf) / (current in milliamps)*1000
Where:
R = resistance in ohms
Vs = supply voltage (in a car, use 13 volts)
Vf = Forward voltage of the LED. This information should be on the data sheet that comes with the LED
current = the rated draw in milliamps, again, from the data sheet
EXAMPLE: You have an LED that says the Vf is 1.5V and the draw is 20ma, what resistor is required to drive it when supply voltage is 13V?
R = (13 - 1.5) / 20 * 1000
R = 575 ohms