Kohler — EBSM Connection and Voltage Setting
Installation · External Battery Supply Module (EBSM)
From a Kohler service manual — check it applies to your exact model before use.
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Before you start
- If the battery connections are reversed, red LED1 or LED2 will light.
Procedure
- Use #14-28 AWG wire to connect one or two batteries to terminal block TB13. A second battery can be connected but is not required.
- Follow the marking on the board for the positive (+) and negative (-) connections.
- Set voltage selector switch SW11-1 to 12 or 24 VDC. Switch SW11-2 is not used.
Tools required
- #14-28 AWG wire Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- DIP switch SW11-1 OFF = 12 VDC; ON = 24 VDC.
- The EBSM must be the last board on the bus and has no address switches.
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.