: If a suppression diode is used on the solenoid, the non-banded side must connect to the blue/white wire
| Pin # | Signal Name | Description | Wire Color (Typical) | | :--- | :--- | :--- | :--- | | | KSI (Key Switch Input) | 48V from keyswitch/tow-run switch | Red | | 2 | Pot Low (Return) | Ground for throttle potentiometer (0V) | Black/White | | 3 | Pot Wiper | Variable 0-5V throttle signal | Green | | 4 | Pot High | 5V reference output to throttle (regulated) | White | | 5 | Reverse Switch Input | 48V to activate reverse buzzer & reverse speed curve | Orange | | 6 | Stop Switch Input (Brake) | Normally open (48V when brake pressed) – used for HPD | Dark Green | | 7 | Interlock / Fwd-Return | B- ground for forward direction (completes circuit) | Blue/White | | 8 | Interlock / Rev-Return | B- ground for reverse direction | Gray | | 9 | Main Contactor (Solenoid) Driver | Output to solenoid coil (B- signal) | Yellow | | 10 | Reverse Buzzer Output | 48V output to sound alarm | Brown | curtis 1510a-5250 wiring diagram
: Inspect the 16-pin harness for corrosion or burnt pins, as these are common failure points in older Club Cars. 1510A-5250 : Curtis 48V 250A (MCOR) SX Controller (Rebuilt) : If a suppression diode is used on