Heads-Up Voltage Monitor
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This is a heads-up voltage monitor. This monitor consists of a single LED that changes colors based on the condition of your charging system and battery. It will show flashing green if it is over 15 volts, steady green if it is between 12 and 15 volts, steady amber if it is between 11 and 12 volts, steady red if it is between 10 and 11 volts and flashing red if it is below 10 volts. Because the display is only a single LED, it is easy to find a place to mount it. This comes with instructions and will work with any 12 volt system. 01050, 48-0994, SD01050
Item: SD01050, T48-0994 Signal Dynamics
I've got on on my 09 for years it is super to know at a glance my alt it functioning correctly.
I highly recommend this. BUT don't use those scotch locks put terminal ends on and solder them with shrink tube and connect to the acc terminal