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84' 944 Alarm bypass/wire harness plug in

Electrical

Vehicle Information: Model(924/944): 944; Year: 1984; Engine (type, size, modifications): 2.5L w/ Jacobs Omni Mag Coil; Total Mileage: 235,000;

I am diagnosing a no-spark problem which is intermittent. The connections at ref/speed sensor fell apart so both sensors were replaced. -DME relay replaced-Magnecor spark plug cables-swapped DME's -- car ran great for 3 weeks with no problems the recently started dying with no spark. Could be cold solder problem?I wanted to bypass the alarm to make sure but I disconnected a 15-pin plug at the alarm and it still worked when armed with key.Can you tell me please if there is any other connections to the alarm than this black plug. See attached file.Also, I do have a supplemental ground strap from cam tower to chassis.I have not been able to reproduce the no-start in my garage yet.

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