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Discussion Starter #1
I have a 91 RT ecu and 92 RT ecu sitting in a box and I don't know which is which anymore. How can you tell the difference between them?
 

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here are the Mopar #s for these....if these appear on the outside of the SBEC then you can tell what year it is

1991 4639393 A Body 16 valve
1992-93 4714343, 4672283, 4672167 A,G body 16 valve (multiple #s as there was superseded #s)
 

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Discussion Starter #6
Thanks for the responses guys.We couldn't make out the part numbers so we counted the pins on the chip and when we were pretty sure Bradd cut the rubber out and soldered in a new socket for me.
 

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One of the biggest change they made between 90-91 SBEC and 92-95 SBEC 2, is the cruise control is multiplexed in the later system, VS a separate wire for Set/Coast and Res/Acc. Plug it in and test it there will be a couple mishaps. But the wiring isn't far enough off to do any harm.
 
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