BOSCH RB8
8E0920 951G
I found the answer by myself...... Here is what it‘s work for
me.
GREEN CONNECTOR
PIN # 1 2 3 POSITIVE (+)
PIN # 18 19
NEGATIVE (-)
Mileage reading will show up for just 2 seconds and then
SAFE is displayed.
2007 Audi A4 INSTRUMENT CLUSTER WIRING DIAGRAM
原文：http://www.cnblogs.com/shangdawei/p/4538941.html