1967 Low Fuel Light
I have owned 5 1967 SS/RS Camaros with U17 (gauges), and none of them had an operational low fuel light. The last one I have, my wife's SS 350, has the problem and I'd like to get it working.
As part of this car's ongoing resurrection (over the years), all the wiring harnesses have been replaced and I noticed the little plug in light socket at the end of the yellow wire behind the speedometer. The old original harness just had a snipped yellow wire. For years, I just left the light unplugged until about a year ago when I plugged it into the FUEL socket. Shortly thereafter, my tach stopped working as well as my BRAKE indicator. The car is no longer a daily driver, so I only investigated the issue yesterday to find that my original printed circuit had melted/separated in 2 places along the lower edge.
Apparently, the light tried to work (I have a low fuel module connected to the fuel gauge in the console) and it fried the printed circuit and blew the 10 amp instrument gauges fuse. This is when I really started doing some research to get this thing working.
I looked up the U17 part in the 67 AIM and there isn't a description of plugging the yellow low fuel light into the dash cluster (there's a great description of wiring the low fuel module in the console though). And from what I've read here on this website, the 67 module sends a positive signal to light the indicator while 68 and 69 send a negative.
I don't know what happened, but I'd like to understand it.
The low fuel plug-in light isn't the half twist kind like the rest of the dash lights, it's the press in type like the illumination lights in the console. It's apparently meant to ground into the dash cluster and receive the positive signal from the low fuel module to light, but that socket is the same as the other sockets on the printed circuit; in that it's built with the twist-in contacts which don't allow the socket to ground. I was thinking that the AIM would advise modifying the printed circuit (cut away the plastic) for that use, but there is nothing.
I'm getting another printed circuit and rather than cut the plastic away, I'm going to use a twist-in light. The low fuel light is on a short pig-tail connector that I removed and replaced with a short dash connector in the number 8 position (I harvested the connector from my old original harness, waste not want not).
I must confess that I don't actually know if my low fuel module is a 67 or other at this point, but I'll test it with a multi-meter to make sure.
Why isn't this part of the 1967 U17 AIM?