Good evening all,

I have a 1986 SDL with 280,000 miles? I have had problems with the speedo, odometer, and clock not working. I had the original transmission overhauled. Before the overhaul and afterwards the mentioned items have not worked. I've had a mechanic check it out, and he's mentioned there is very little pulse feeding into the speedo. I have even tried switching the entire unit out with a unit I got at tbe bone yard. The switch didn'tt make any difference.

Does anyone have access to the wiring diagram for the speedo? Any suggestions of what to try next? Any and all assistance is appreciated.

Thanks in advance for your assistance.

Ron

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