OK

Your problem has been narrowed down to NSS or K38 contacts.
The X27 connector we addressed is downstream from them and the chain is Ign sw >NSS>K38 interlock>K27..so we know K27 and On are verified.
Reason for alalm ON/Off is b/c each time you do that , the K38 contacts open/close ..so, if we have a poor contact set, that will give us an indication..

I have the schematic and there are a few more jumper test that will verify which part of the circuit is at fault, but try alarm first...

Give me that Blankers link to save me repeat typing ....

*Note:

For any following this thread, pay attention to the X27 jumper trick b/c this will save you a tow truck if you get caught somewhere in the Bonnies with a bad NSS or K38 relay problem..crude , but will get you home ..
Print it out and throw it in the glovebox.

__________________
A Dalton