Pinouts:

XBS1 (Main brake);

pin 1 - brown

pin 2 - green

pin 3- unused

pin 4 - white

XBS2 (E-Brake);

pin 1 (PS3+) brown > attaches to red (2)

pin 2 - unused

pin 3 (PS2) yellow > attaches to white (3)

pin 4 (PS1-) white > attaches to green (4)

• pin 1 (Brown to Red) goes to relay [5] A1 & parallels to pin 2 on XEB2B/1

• pin 3 (Yellow to White) goes to relay (1) A2

• pin 4 (White to Green) goes to pin 4 on XEB2B/1