There is a tan and white wire from the coil that is for the tach, I have the same truck and will be installing a new cluster with a tach, why the manual transmission trucks don't come standard with one is beyond me most are in automatics.

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2000 XLT Ext Cab 2door, 3.0 V6 Flex, 5 speed manual,2WD Kenwood aftermarket stereo Many mods planned just not able now on crutches for 8 more weeks