Connector Numbers

Pin Assignment:

Connector Numbers:

Number Type Description

X332 5-pin, white GM-A

X253 26-pin, green GM-B

X254 26-pin. white GM-C
Is only installed
in conjunction with
power windows

X255 26-pin, yellow GM-D

X256 20-pin, black RM-A up to model year '88
RM-B as of model year '89

X259 20-pin, white RM-B up to model year '88
RM-A as of model year '89