One of the disappointing and irreconcilable circumstances arising when working on Bricks—or many other types of machinery—is discovering that manuals—like people—can sometimes be mistaken. Your experience right now,
pinhead, is one of them. We know our Bricks have
a bulb testing device but it is missing from the list of that Clymer diagram. It's missing from the list because the Clymer manual has misidentified that device as
fuel pump relay #2 and the error was not caught by the technical editor or compositor before the manual went to press. When an editorial error like this is caught after publication, the publisher usually prints what is called an
Erratum correcting the error in all subsequent editions after the error's discovery. I don't know if that was done in this case, but there is nothing to be done to correct the manuals that had already been sold containing this error and are being consulted by folks like us today.
Images from MaxBMW's parts fiche:
Photo from James Sherlock, Ltd.:
If you look at the Clymers
electrical schematic of the '85 Brick, you'll find only one component labeled as a
fuel injection relay, also known as the "fuel pump relay." The struggle to understand wiring diagrams is eventually worthwhile and helps to verify information. It's also helpful to verify from other sources—manuals, diagrams, owners with reliable experience—when a significant discrepancy like this one comes to light. You've done that now.
