Pics/Question for 91+ valet switch + harness question

[Corvette95]

Does anyone have a picture or currently working on any 91+ car with access to the valet switch and harness? I am starting to stash a few parts away for a project later this year. I want to know if a 91+ valet switch and pigtail can be modified to work on a 90. I plan on pulling the dash out when the weather cools off and replacing dash harness due to one of my Bose drain is broken at the CDM and causing a super low hum at idle speeds and the radio on but no volume turned up. So, yes, no one would ever notice , yes you can't hear it with any audio volume on (radio/cd playing etc), but it bugs me so going to fix it and I was thinking about swapping the valet switch (I have all the LT5 bezels I need) for a 91+ and wondered if A "would a 91+ valet switch could be pinned to work on a 1990 dash harness or B would a 91 dash harness work on my 90 with the different valet key switch. Lastly, if anyone knows, I don't think GM ever made a or offered a separate dash harness just for the 90-93 CDM? I know the rear Bose harness was available with its own part# . Thanks (Also)- anyone here have a 91+ valet switch and key for sale?