RFDENABLE

[Mike Pitts]

Thanks again to Ludis and his awesome web pages for this find. 

On the C3 ECM's, if you need another A/D input, and don't care 
about limp home mode, you can use the RFDENABLE line as 
the input.  This is accessible on the test connector at pad #38.  
The code uses it as a discrete, but it is really an A/D. 

Also, on the sequential '148's, there are two more A/D inputs 
that are simply grounded on the board.  It would be easy to 
modify the ECM slightly to gain those inputs as well.

Anyone know how to amplify an K-type thermocouple EGT 
signal to 0-5v?  8-)

-Mike