Today driving home from Maine in the 85 the tape deck started to make a clicking sound and the entire dash power went flaky. Gauges, hazard lights, etc. These episodes would last for a few seconds and then go away.

Loose connection or ground possibly...needs to be check for sure.

But...

Is this a failmode or symptom of some other component on that circuit failing like the ACC, radio, a relay, etc?

thanks,
dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car