[Gmecm] Shift light load

[Scott Peitzsch]

A typical dash indicator bulb - shift light or otherwise - is going to be
either a 194 or a 168, which will consume 0.27 - 0.35A.  The other
typical device those quad driver outputs control are vacuum solenoids
and relays, which generally check in around 60 ohms (at least the few
I have here to measure), which is a sinking load of ~200mA.

If I had to guess, I'd say those drivers have to be good for sinking
at least an amp.  However, I'd probably consider using a relay much
above 500mA just to be conservative.

Have you looked into any of the ultra bright LEDs?  You can get the
brightness you want without the penalty of hugely increased current
consumption.  In fact, you'd probably end up drawing LESS than you
do today.  I've used these in the past:

http://www.autolumination.com/

-Scott


> Anybody know what load can be put on the shift light pin of a '727?
>
> I'm using a small dash light ATM, but it's not wonderfully visible so I 
> was thinking of fitting something bigger and higher wattage - as long as 
> it doesn't fry the ECM!
>
> Robin