This started as a "what if" question. On one of the Cadillac online forums I participate in, a retired Bell Lab's electrical engineer was describing his intricate fixes on old GM fuel injection circuit boards. During the course of following his progress, I asked if it was possible to come up with a circuit board to make a new, off the shelf sending unit work with the weirdo Brougham dash gauge. "Of course it is" was the answer. After a couple of years of prototypes and improvements, the circuit board design was complete and one board design is able to be made to become either a fuel or oil version depending on how it is made. With this custom board, case, and wire harness, it installs and plugs into the original Brougham harness.
This module also provides the signal to light the low fuel indicator built into the Brougham fuel gauge. The Stewart Warner sending replaces both the level sending unit and low fuel tell tale, 1518565 and 1518656. The new unit installs into the hole used for low fuel tell tale.
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