[Healeys] BN2 overdrive driving me nuts

[Roland Wilhelmy]

Jose,
I went looking for 'the test with a lamp as described on the manual'.
I cannot find it.  Were you using the instructions for the BN1 
overdrive
electrics?  They are very different.

In the manual on page D/4 of the BN2
Supplement 
it takes you through six tests that use no tools except for a
jumper 
wire (lead). There is also a helpful circuit diagram of the overdrive
system.  

Test the Solenoid by powering it directly from fuse 
supply
terminal A3.  You should hear the solenoid operate.  Test the 
Gear switch by
engaging top gear, depress the throttle pedal and 
momentarily connect relay
terminal C2 to fuse supply terminal A3. 
You should hear the solenoid operate.
Test the Relay Coil by 
momentarily connecting relay terminal W1 to terminal
A3.  
The relay should be heard to operate.  Test the toggle switch by
operating it.  You should hear the relay.  Test the Relay Contacts 
with top
gear engaged, toggle switch closed and throttle switch 
open, the solenoid
should be heard to operate.  If no sound is 
heard the relay is defective.
Test the throttle switch by 
engaging top gear and close toggle switch.
Slowly depress 
accelerator.  The solenoid should be energized from zero 
to
one-quarter throttle.  If the solenoid is heard to release 
under one-
quarter throttle the throttle switch is 'defective' 
(maybe just needs
adjustment).

Hope this helps.

-Roland
BN1



----- Original Message ----
>
From: Josi Vicente Vargas <jvvmusme at yahoo.com>
> To: Healey List
<healeys at autox.team.net>
> Sent: Sat, September 3, 2011 8:01:31 PM
> Subject:
[Healeys] BN2 overdrive driving me nuts
> 
> 1. mechanichaly it is fine. If I
get under the car and pull the lever  the
> overdrive engages fine.
> 
> 2. Do
the cables (white with purple and  white with
> green) that go in the throtle
switch have an specific order  ?
> Which one goes
> on top and which one goes
on bottom ?
> 
> 3. If I do  the test with a lamp as
> described on the manual
I get the exact opposite  results of the manual... 
when
> the light shoul go
off it tuns on and when it  should be on it turns off.