macrumors newbie
Original poster
Feb 17, 2013
San Francisco, CA

Apparently there is no forum for legacy Apple computers, so I'll just post it here.
I have an Apple II+ I'm restoring, and I found this random jumper cable connecting the motherboard to a single pin on a ROM socket. (The wire in question is the seemingly randomly placed red wire.)

Is this important? What is it's function? I want to clean under the mobo but I'm afraid to unplug it, lol.

More pictures:,,,

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