Help with old school a/d/s/ equipment

[Gooch]

I just recently purchased some a/d/s/ stuff that I'm looking to put into my 1991 BMW 318is. I got a set of rear speakers with enclosure, a pair of subs with enclosure, crossover and amp. I'm not sure of the speaker/sub model numbers, but the crossover is a 642CSi, and the amp is a PH12.

Here are some pics of the gear I bought:

I just ordered the 8 pin DIN male to male cable to connect toe crossover to the amp, but the owners manual for the 642CSi says that I need either AC500 (remote bass control) or a DIN jumper plug for it to work correctly. Does anyone know where I can find an 8 pin DIN jumper plug?

If anyone is familiar with a/d/s/ stuff, please chime in. Thanks in advance, guys.

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[Gooch]

Edited my post, I answered all my own questions, but I still have a question about the DIN jumper plug.