I have been running a Runtz in my resurrected '51. The alternator is a delco 10SI. I have a #8 copper wire running from the alternator to the starter battery terminal, so I am not using the ammeter for anything but a power distribution point.
The sender never has read correctly (read 1/4 tank when tank is dry) and has been erratic at times. The fuel gauge quit recently (read empty all the time) so I installed a new sender. The gauge did not work so I 'ohmed' the sender and it reads correctly (30 ohms @ full, 0 ohms @ empty). I then traced the circiut and figured out that the Runtz was not putting any voltage.
What typically goes wrong with these units after 'voltage spikes'? How can I fix this voltage reducer so my gas gauge works again?
