Archive for November 7th, 2023

Nov 07 2023

Indicator and hi-beam lamps self testing

Published by under Tech Talk

Does anybody in OMGC have any ideas why the following is happening on my 1973 MGB?

Background:
Car has overdrive available on 3rd and 4th gears when the O/D switch is ON.
All lamp bulbs have been converted to LED with exception of alternator indicator and headlamps.
Overdrive being active involves 2 switches both being ON simultaneously. They are both in the Yellow wire circuit and permit the O/D solenoid to become active.
When this activation is stopped (O/D off and/or out of 3/4 gears) the solenoid deactivates.

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