I recently installed a Autometer Phantom tachometer and upon the first start up my fuel gauge shot up about 90 degrees past the full line and then dropped back where it was supposed to be and has been doing this intermittently. As far as wiring goes, I spliced into the pink and black wire that runs to the cluster for tach power, and for illumination I spliced into the main gray wire that runs into the cluster. The ground I ran out to the alternator bracket with the main ground strap. If this is interfering with the fuel gauge how should I correct it or where is the best place to wire the tach into? Thanks!
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