When I bought my 2001 RT/10, the Yellow Box was inside the cover of the PCM. I found the box to be unreliable and had Dan Cragin recalibrate my speedometer through the PCM.
The issue is that when the key is tuned to accessory or when the car is on the speedo maxes out with the odometer turning correspondingly. I get a lot of miles at 200 mph! Tried all the simple fixes. Disconnected the batteryAnybody heard of this problem before?
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