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Re: 96 Taurus check eng lt inop.
It looks like you need to check pin 2 at the PCM connector or pin 15 of connector C250 at the instrument cluster (Pink/Light Green wire) to see if it has a ground when the bulb test should occur.
Do any of the other bulbs in the instrument cluster work for the bulb test or otherwise? The CEL, low fuel indicator, temp gauge power, fuel gauge power, tachometer power, door ajar indicator, seat belt indicator, oil pressure indicator and brake indicator all get power from the same supply, which is fused by a 5-amp fuse in the instrument panel fuse panel. If the other indicators and gauges work, you are looking at the Pink/Light Green wire from the PCM.
-Rod
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