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This is easy.
4 pin square
Pin#
1. black/red wire to power (+12V)
2. brown wire to ground
3. green wire to sensor
4. gray/blue wire to illumination
5 pin in-line
Pin#
1. brown wire to ground
2. gray/blue wire to illumination
3. green wire to sensor
4. green/yellow wire to vehicle speed sensor
5. black/red or black/violet to power (+12V)
There may be some color variations. The speed sensor freezes the reading in stop-and-go traffic, when road heat would otherwise cause the display to erroneously read too high.
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"Buster" in the '95
Our all-Diesel family
1996 E300D (W210) . .343,000 miles Wife's car
2005 E320 CDI . . 148,000 miles My car
Santa Rosa population 177,300 (2026 projected)
Total. . . . . . . . . . . . 668,300
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970
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