Assuming you have looked at all your fuses in that system, First disconnect and clean main ground on battery. Clean positive connection too. Reconnect ground wire last. If problem persists, have the alternator and battery tested. That is often a free service at chain retailers. If everything checks out, instrument pod my have issues. That is a more expensive fix because it must be removed in one piece and sent off for repair.
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Assuming you have looked at all your fuses in that system, First disconnect and clean main ground on battery. Clean positive connection too. Reconnect ground wire last. If problem persists, have the alternator and battery tested. That is often a free service at chain retailers. If everything checks out, instrument pod my have issues. That is a more expensive fix because it must be removed in one piece and sent off for repair.