Grounding the CHT should cause the 1.8 L-jet FI to run lean, just as it would the D-jet EFI.
The AAV is, I think, grounded through its case in the 74 cars. The 75 may have another ground, but I think the 74 is like the 70-74 1.7s and 2.0s in that the AAV is grounded through its case.
--DD
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Pelican Parts 914 Tech Support
A few pics of my car:
http://www.pelicanparts.com/gallery/Dave_Darling
[This message has been edited by Dave_Darling (edited 10-30-2001).]