help me id this kit please
 

I have a buddy with a 91 k5 that is having some A/C trouble. It is not factory air, best I can tell is its a nice dealer installed setup. The fit and finish especially inside the cab is pretty good. Can anyone tell me where I can find some info on this thing? Mainly needing a wiring diagram.
http://i1173.photobucket.com/albums/...psa5d80ec2.jpg
http://i1173.photobucket.com/albums/...ps2075dd41.jpg
http://i1173.photobucket.com/albums/...ps1d6c349f.jpg
http://i1173.photobucket.com/albums/...ps88115330.jpg

I know this isn't a lot of detail, I'm trying to get some more pics...
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Posted via Mobile Device

Re: help me id this kit please
 

A tag on the under dash unit says "GRENELCO" but so far that hasn't gotten me anywhere.

http://i1173.photobucket.com/albums/...pse9dc64eb.png
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Posted via Mobile Device

Re: help me id this kit please
 

check this site out, I know A.R.A. used to be popular for add on air back in the day

http://www.arasourcing.com

Re: help me id this kit please
 

I went there but they don't really have any info on their A/C kits. When you click on it you sort of come to a dead end. But I will continue to look into them...

After doing some more research on GENELCO it appears they make some A/C components for both automotive and construction, but I don't think they are the producer of the kit itself. So, the search continues.