Specs

Both v3 and v4 boards features:

• Oil pressure warning light (red)
• Neutral light (green)
• EFI warning light (yellow)
• Low fuel light (blue)
• Support for displaying the water temp from the the stock water temp sensor
• Ability to decode error codes from the SV650 ECU *
• TPS adjustment indicator *

[*] Note: Normally the 4 digit LED display shows the water temp. To show the TPS indicator or ECU error codes, you’ll need to use a “Suzuki diagnostic tool” (aka a paperclip) to short two wires per the shop manual.

The v3.0 and v4.0 boards have some small differences:

1. v3 is all through hole (PTH) while v4 has some SMD parts.
2. v4 adds circuit for detecting bike battery voltage
3. v4 adds a solder pad for the LM7805 to improve vibration resistance (Note: I highly recommend you glue the LM7805 to the PCB on the v3 board as vibration may cause metal fatigue and cause the part to break.)