On Sat, 02 Apr 2005 13:19:42 +1000, Franc Zabkar
put finger to keyboard and composed:

On 31 Mar 2005 19:38:05 -0800, "Thomas" put
finger to keyboard and composed:

I am trying to activate a relay when the vehicle is in anything other
than Park.

Oops, the relay driver transistor in my circuit should connect to the
Q output of the 7474, not its Q* output. I would also add clamping
diodes to the P input of the 74123:

+5V
___
|
_|_
/_\ 1N4148
|
|
P ---|-- 74123
|
_|_
/_\ 1N4148
|
_|_

Ground


- Franc Zabkar
--
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