I have the OEM keyless entry system in my 93 LS Sedan. When I took the bottom panel out, the keyless entry module was attached to the bottom panel. There was only one green connector that hooked up to it.
There was another smaller plug that went to my OEM foglight switch, and another one to the Courtesy light dimmer (adjacent to the foglight switch).
There was another smaller plug that went to my OEM foglight switch, and another one to the Courtesy light dimmer (adjacent to the foglight switch).