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Discussion Starter · #1 ·
Hi all,
I have a pair of 4.3L Mercs with the Thunderbolt V Gen 3 ICM. I put together my own 94020 adapter (NLA) after getting the wiring schematic from Rinda. I know the only data I can read on the TB-V is the hours and that's all I really want to do.

Now do I really have to spend $600-$1000 on these scan tools or is there some sort of "free trial" that anyone knows about with Diacom?
I was quoted $200 to read the hours and I think that's a bit much for something simple.

I also have the wiring schematics if anyone would like them to build their 94020 adapter. I can walk you through it too on both the Gen 2 and 3 ICMs.
 
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