Red Ford instrument-cluster flex circuit board with gauge pins a…

The module slides down & locks in place.
IF THE IMAGE IS TOO SMALL, click it.

The power feed for the module comes out to the lower L terminal of the connector socket, which isn't used on the harness connector. Fortunately, the adjacent terminal is a key-switched power feed for the gauges. There are 2 ways to get power to the module:
1) solder a jumper onto the film circuit between these 2 traces. This can be difficult, considering how easy it is to melt the film, and that any solder where the connector terminals slide could make removing the connector difficult later. But it is convenient since it puts ALL the modification ON the cluster; or
2) install a terminal in the harness connector & join it to the adjacent wire. This is a cleaner way to power the module, but finding the correct terminal to install there might be difficult. Also, the connector must be partially disassembled to install the terminal, which isn't easy inside the dash.

Note the resistor at the top of the film circuit just above the exposed contacts. This is the resistor that makes the oil pressure gauge read in the middle when the pressure switch is closed. Soldering a jumper across those exposed terminals effectively removes the resistor from the circuit, which allows an older oil pressure SENDER to work, making the gauge actually show oil pressure changes. This TSB explains why:


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Owner caption July 2006 · Photo 1319 of 5000