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[Web Creator] [LMSOFT]
VH Commodore Electrical Issues
Phoenix Mechanical
Soaring

Tail lamps - Many tail lamps suffer from a bad electrical earth connection, which results in erratic globe operation. E.g.; indicators coming on with the brakes, brakes going off during indicating etc. This problem can be rectified by soldering in a fresh earth to the tail lamp wiring loom. Other problems also arise due to corroded or rusted globe holder terminals. Cleaning these terminals with some sand paper or steel wool can help, or second hand holders may be needed.

Indicator stalk - Commodore indicator stalks are a common downfall. The high beam circuit is activated through the indicator stalk, which has a habit of failing. The main part of the stalk is flimsy cast metal which is crimped over a steel plate to hold the high/low switch in place. Because of continuous indicator use, the steel plate often breaks away from the cast, and this can result in no low beam lights, although high beam and parkers will still operate. Another less common problem is the rotating wiper switch which is spring loaded onto the stalk. This switch is held in place by a plastic clip which can break, and if it does break, the rotating switch flies off. It's even worse if the drivers window is down at the time.

Rear demister switch - The rear demister draws a lot of current, and is often left on without being noticed. Continuous high current draw eventually melts or damages the rear demister switch internals, and renders it useless. New switches are readily available.

Oil gauge - Commodores with an oil pressure gauge require a different sender unit than those with only a light. If the wrong sender unit is used, the oil gauge will show maximum pressure with the ignition on, and without the engine running.