Originally Posted by herk7769
I don't understand this comment or how it applies to this thread.
I jumped the gun and made some assumption that may have been in correct. I do apologize.
On a side note, having spent the last 18 years as an Electronic Technician and Technical Manager repairing and maintaining video games, as well as several years as an installer doing car stereos and alarms, I might not have the theory down like you guys, but I have plenty of experience on the practical side dealing with these issues.
I question how the noise of a relay on the power side took out his logic boards. There is a pretty big coil in the starter solenoid, ton of coils in the relays for the fans, light, foglights, AC. Not to mention how dirty the power coming from that alternator is. Yes, you can see the voltage pike on an o-scope, but put that relay into the real working world, right next to the battery (and all of its capacitance) and let theorize about how that killed his BCM or PCM.
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