Speedometer battery or no battery

[Evinrude Boy]

Can some one tall me if you absolutly nedd a battery to use a speedomoter (without back light)<br /><br />------------------<br />Jess

 

[kev_79]

Re: Speedometer battery or no battery

Usually boat speedo works off of water pressure. you only need the battery to turn on light. Some may need power, but you can get that from motor. GL