[Healeys] Overdrive wiring question

[BJ8Healeys]

If a set of the relay points were somehow in mechanical contact regardless
of the energizing or not of the relay coil, then you would get 12 volts at
relay terminal C2 without the dash switch being on, and the symptoms you
describe.  It's not quite clear to me, however, why the throttle switch
stops the symptoms with the throttle switch open.

Remove the white wires from relay terminal C1 and the white/green ones from
terminal C2 and check for continuity between those terminals.  If you have
continuity, then the relay is bad.

 

Steve Byers

HBJ8L/36666

BJ8 Registry

AHCA Delegate at Large

Havelock, NC  

 

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bruce
Steele
Sent: Sunday, September 03, 2017 10:39 AM
To: 'Healey List'
Subject: Re: [Healeys] Overdrive wiring question

 

A couple of other factors:

1.    The dash switch is not defective; it tests fine.

2.    Removing the ground from the OD relay (terminal W2) had no effect;
i.e., the solenoid still engaged when the lever was moved to the 3rd/4th
position, indicating to me that the relay was not engaged and thus holding
the relay points closed.

 

Bruce Steele

Brea, CA

1960 BN7

 

From: Bruce Steele [mailto:healeybruce at roadrunner.com] 
Sent: Saturday, September 02, 2017 9:50 PM
To: 'Healey List' <healeys at autox.team.net>
Subject: Overdrive wiring question

 

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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