Identifying High Temperature Wiring

Wiring that is exposed to high temperature, 135°C (275°F) or higher, for prolonged periods of time need special considerations when making wiring repairs. Areas that may be exposed to higher temperatures can be identified by heat resistant materials that are being used in those areas. These materials may include heat reflective tape, moon tape, and high temperature shrink tubing. Also conduit and other protective coverings may be used. Because conduit or similar coverings are used throughout the vehicle regardless of the temperature, it may be necessary for the technician to determine if an area is exposed to excessive heat before making a wiring repair. Obvious areas of consideration would be any area located near the exhaust manifolds, catalytic converter, and exhaust pipes.

The J-38125  contains much of the material you will need to perform repairs on areas exposed to high heat. See Special Tools . The kit contains the following items:

• DuraSeal splice sleeves to crimp and seal connections
• High temperature SCT1 shrink tubing to protect the splice sleeves
• A large sampling of common electrical terminals
• The correct crimp tool to attach the terminals to the wires
• The correct tools to remove the terminals from the connectors

The J-38125  does not contain wire that is suitable to high temperature exposure. See Special Tools . Use high temperature bulk wire rated at 150°C (302°F) continuous temperature of the same or larger gage size as the original wire when repair damage wire. Also replace any reflective tape that you remove during the repair.