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For 1990-2009 cars

Electrical Wiring Harness Design Changes

Subject:Service Information on Electrical Wiring Harness Design Changes

Models:Some 1992 Saturns and all 1993 Saturn and Coupes



Purpose

Three design changes havebeen made no electrical wiring harnesses as follows:

1. The connector position assurance (CPA) retainers have been eliminated from the following connectors in interim model year 1992 and all 1993 models.

Connector Description

Connector P/N

Cpa P/N

Rear Radio Speakers

12077887

12052834 (Connector Kit 12116746)

Cargo Lamp

12052832

12052834

Clutch Cruise Switch

12052832

12052834

HVAC Blower Motor

12064993

12020833

HVAC Recirc. Switch

12064993

12064989

Door Lock Switch

12064758

12052834

Oxygen Sensor

12089916

12052834

A/C Compressor Switch

12065172

12052834

2. The connector position assurance (CPA) retainers have been eliminated from the following connectors shortly after start of model year 1993 production.

Connector

Connector P/N

CPA P/N

Rear Delog Switch

12064758

12052834

HVAC Control

12064752

12052834

HVAC Fan Switch

12092374

12092376

HVAC Resister Block

12064877

1202083

Master Window Switch

12084795 12084796

12052834

Rear Window Switch

12066571 12064749

12052834 12052834

HVAC I/P Junction Block

12064749 12064752

12052834 12052834

Window Motor

12064749

12052834

3. The ground didtribution system has changed for the rear body splice pack. The rear body splice packs on vehicles built before the change are connected to body ground at a weld stud in the left rear wheel well area (refer to Figure). Wiring diagrams for this configuration can be found in the "1991 - 1992 Electrical Power Distribution Service Manual."


Object Number: 1220399  Size: MF

Rear body splice packs on vehicles built after this change are connected to body ground at the rear package shelf (refer to Figure). Wiring diagrams for this configuration can be found in the "Electrical Distribution" section of the "1993 New Model Product Guide." This change was implemented on some 1992 models starting with an including VIN NZ156919. This change was fully implemented on all models starting with and including VIN NZ182094. The following systems utilize the rear body splice pack for ground:

    • Fuel Pump
    • Left Rear Stop/Tail Lamp
    • Center High Mounted Stop Lamp
    • Cargo Lamp
    • License Lamp