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I modified the stock clock opening in my WRX some time ago to house that exact thermometer - it's wired to the stock clock harness, lights up green all the time, and has worked very well for me (it does have a clock). 
When I posted about it, it actually got quite a following in the WRX community - was made a sticky for ~ 6months. Link here. There's a lot on info posted on the site regarding sensor locations, etc. I always thought It'd be cool to see in a Z, I'm sure you could modify the stock clock housing to fit it as well. Unfortunately, that particular one was discontinued by RadioShack, so they may be tricky to find.
- '02 Subaru Impreza WRX - '90 TT Stage 3+ (Sold) - '93 NA Stage 1+ (Sold) |
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