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Facts without proof are pointless.
Pic 1 shows the IAV with 12+ VDC applied. It is open mostly.
Pic 2 shows the IAV with 0VDC applied. It is closed mostly.
When the MB is started, 12+ VDC is applied to the IAV
by a signal to the appropriate circuit by the ECU.
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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T
"If you dont have time to do it safely, you dont have time to do it"
"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
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