Diode replacement Flush Mount Voltage Knob for Internally regulated alternators. This voltage knob works with alternators equipped with a (S) Sense pin/wire. Premium Bourns 5k linear rheostat has 10 turns on the dial to precisely increase voltage. Typical voltage increase is 1-1.2v beyond your alternators stock set point. Charging at 14v? this will allow you to charge at 14-15.2v by adjusting the knob. Charging at 14.8v? this will allow you to charge at 14.8-16v by adjusting the knob. These also come equipped with a mini volt meter that is super bright and can had in multiple colors. All units come with a fuse and fuse tap. These work on up to 4 total alternators of the same make. Overall size is 4.2in x 2.2in Mounting holes are 3.35in x 1.25in apart cutout required for flush mounting is 2.8in x 1in Volt meters have 3 wires Red= remote turn on Yellow= 12v constant power (battery ,alternator, etc.) Black= ground (-) PLEASE READ CAREFULLY… *These will not work on 2 pin alternators from GM, a 4 pin regulator is required for a sense wire to be utilized. These will not work on many newer PCM controlled vehicles.. if you already use a diode to increase your voltage but want a higher and more reliable charge… these are perfect for you! there is no returns on this item if you damage them during the install or order this for a non compatible charging system please contact us before purchasing if you are unsure if these will work on your application Instructions: These units have 2 wires… It does not matter which wire you use in the following directions. 1 wire will connect to your alternators (s) sense wire. 2nd wire will connect to a relay off your ignition source in your stock vehicles fuse panel. We recommend a 5am inline fuse on the wire connected to you ignition source.
