I had a ground wire failure cause a bad relay symptom once- it is grounded thru the washer pump. the connection there, w/ 2 brn wires, was bad.
the large term should always be hot.
brown is grnd.
violet gets key signal.
and the last wire as I recall gets engine temp?

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.