Hi guys, I have a turbo drag bike and I have dumped the stock dash for a custom set of gauges. In doing so, I dumped my fuel gauge but kept the sender unit in the tank.
My question is, Can I make a simple circuit to illuminate a LED when the resistance of the fuel gauge sender is 90 Ohm's and greater? I dont want a gauge, I just want to know when I am getting critical low fuel.
The LED will be a 5v 20mA high bright unit and the source voltage on the bike is 12v. I know the resistor needed to protect the LED no probs, its just the switching part I dont get.
I have done a stack of searching on the net but maybe I am not using the correct keywords.
Any help appreciated
My question is, Can I make a simple circuit to illuminate a LED when the resistance of the fuel gauge sender is 90 Ohm's and greater? I dont want a gauge, I just want to know when I am getting critical low fuel.
The LED will be a 5v 20mA high bright unit and the source voltage on the bike is 12v. I know the resistor needed to protect the LED no probs, its just the switching part I dont get.
I have done a stack of searching on the net but maybe I am not using the correct keywords.
Any help appreciated