Electronic Engineers

[pthomas]

Hi,
I want to keep the dash on my Crendon Replica as authentic as possible and I am going to fit a fuel pressure guage. I would also like to fit somewhere discretely an LED which indicates when the tank is nearly empty. I was thinking of using the fuel guage sender in the tank to do this. Is there anyone who has a circuit that I can use. Ideally it would include a surge prevention circuit (timer) which would prevent the LED from flashing on and off.
I have the skill to assemble such a circuit but I cannot design it and would not know the appropriate values of resistances etc.

Thanks in advance.
Peter.

[racinjason2316]

Have you had trouble with your fuel system producing enough pressure or volume? I normally just install a gauge under the hood somewhere for day to day use. For tuning, I built a temporary mount electric gauge setup so I may observe under driving conditions. As for your low level light, you may want to install a secondary float device that is on or off. Usually the factory low fuel light is turned on by a separate contact on the level sending unit. It simply completes the ground for the low fuel light and then the light comes on. You could probably build yourself a little float low level sensor and install it in the tank easier than you could build the circuit to trigger it with the analog level sending unit. Just my .02

[Bryan Wilson]

Peter,
Here is a link to a circuit that should suit your needs.
http://www.electronicsforu.com/EFYLi...-06-July05.pdf
Cheers,
Bryan