it doesn't conduct when not in use though..... it's an open circuit until commanded on.
i get the feeling that there is a diode inside the quad driver that would conduct when the quad driver is used as a source rather than a sink.
i've "abused" the quad drivers on my 9396 on the bench.... i've given it up to 2 or maybe 2.5 amps of load to deal with for short periods of time, and they appear to have survived and function normally still.
There's a difference between the 12V seen through the coil of the relay and applying 12V directly to the pin.
When the 12V signal is passed through a coil, there is an impedance to it, and that will reduce the potential current. Usually the current in this case would be close to zero, where as when 12V is directly applied to the pin there is no current limiting.
The man who says something is impossible, is usually interrupted by the man doing it.
hmm...... should also consider that if any of the other outputs on that driver were active at the same time, you would have unlimited +12V and ground being connected to the same circuit from within the quad driver itself...
i imagine some magic smoke were released.
At this point, will need 2 bottles of it!
Smoke.jpg
This issue was resolved here (see Post #4):
http://www.gearhead-efi.com/Fuel-Inj...nd-7730-Pin-F8
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