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05’ Merc 225 DFI - No communication to Smartcraft gauges

RF757

New member
Replaced two batteries , Went for a run up river and noticed I didn’t have engine temperature readings , RPMS , speed basically no vital information. looked for loose wiring, disconnected plug connections from back of gauges and from terminal block , sprayed with contact cleaner and reconnected. Same issue. With key in the on position (motor not running) gauges are displaying “No Tacho
 
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