I built my current thirdgen out of my last 85' and a 86' roller I bought. Lost the 85 due to an old guy making an illegal u-turn after installing a new Hood from Hawks, 3 inch exhaust with cherry bomb extreme mufflers and 406 I built from scratch. Anyway enough about that. The 86 didn't have a rear view mirror so off I went to the junk yard with a pocket knife and after a couple quick slices and a well placed smack to a silverados windshield with a tailpipe, I left with a mirror and a temerature sensor.... 5 wire hookup 1 ground, 2 power, 2 signal. Anyway I think it looks cool and I now know what way I'm pointing and how hot or cold it is for less then $20.

 

I did the same thing, but I pulled mine from an Oldsmobile and got one with the auto-dimming feature.

 

That's cool this one has the auto dimm as well.

 

Ive been looking for one w/ temp/comp.Mine only has a comp & the one I replaced only had the temp, cant win, but I mostly installed it for the auto dim feature.