[Healeys] Overdrive wiring question

Bruce Steele healeybruce at roadrunner.com
Sat Sep 2 22:49:51 MDT 2017

After installing the new wiring harness, I encountered a puzzling situation.
With the engine off and the ignition on, the OD solenoid would engage when
the shift lever engaged the transmission switch irrespective of the position
of the dash switch.  That is, the solenoid would engage whether the dash
switch was on or off.  Further, if I depressed the accelerator, thus opening
the throttle position switch, the solenoid would NOT engage under the same
conditions.  Hence, it seems that either the OD relay was engaged by the W1
terminal being energized or somehow the C2 terminal was energized.
Unfortunately I caused a short in the throttle switch damaging my harness
before I could trace this.  Any thoughts?


Bruce Steele

Brea, CA

1960 BN7


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