You might: 1. Fill the gas tank as full as possible. 2. wire in-line to the sender wire a potentiometer (variable resister), I would start with a "100 OLMS". 3. Turn the shaft until the gauge needle points to the "FULL" mark, or a little past, or a little under if you wish to have a "built-in" reserve. If the 100 OLMS is too much, try 50 or 500. Another way to calibrate a "built-in" reserve; is to run or drain the tank empty, put in the known amount that YOU wish to KEEP as a reserve, say 2 gallons! Now adjust the gauge to read right on the empty LINE. If you want it PERMANENT, then read just the POTENTIOMETER (disconnected) and then make up a series of "fixed" resisters to match that value and then solder and shrink tube it (don't forget to use HEAT SINKS or you will alter the values or destroy the resisters). Radio Shack should have all the resisters you will need. I took the easy way out and went to a VDO RED LED digital read-out fuel gauge, which has the variable resister adjustment built in! (adjusted from the back) It reads from 0 to 99 gallons! Examples; 0 when empty 21 full (ideal). 5 empty, 25 full. 15 empty, 55 full. ETC. If you set to read "99" when full, then it may work to show the PERCENTAGE of the tank, I.E. "100%" full. "50%" half tank etc. If you are unlucky enough to have the sender and gauge work "backwards" as it does on my Harley Davidson, I.E. "6" when full, and "25" when empty, then, like I do, use it as a "logorithim"(counting up) and "15" will be at a half full tank!! Good-Luck with it, Marlin.
[This message has been edited by MARLIN JACK (edited 12-07-2002).]
[This message has been edited by MARLIN JACK (edited 12-07-2002).]
