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I actually don't have the part numbers of the mosfet I have here. I looked online but couldn't find anything. So, looks like I'm going to need to order some. I also could use (per the suggestion of a friend) fast recovery diodes to protect the arduino/transistor from the relay coils. He said regular diodes aren't fast enough. So, if you could recommend something, perhaps the bc546, I'll just adjust for using that.
As a side note, I buttoned the center console back up this afternoon. Before doing that I soldered leads on the LED and photo resistor so I can get to them.
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