84 300sd- I replaced the interior of my car with a newer one from the junk yard I don't remember the year of the doaner car, and now my fuel gauge won't work. This wasn't an exact replacement, and I spliced the electrical connector on using the color code on the wiring to install the connector. The seat does work. But I must have done something to break the connection to the fuel gauge. Does anyone know how the gauge is wired?
Thanks Dan

It's just a plug, but there may have been different plugs for different years, how many wires in the plug?

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83 SD

84 CD