I found this install thread for a voltmeter on VFRD and thought it was definitely worth sharing. Looks like a great way to do an install, though not necessarily an easy one. Check it out though. http://www.vfrdiscussion.com/forum/...nstrument-faceplate-change/page-3#entry942777
I posted my install on page 10 - tons of ideas and locations on this thread...good resource when I was debating on location http://www.vfrdiscussion.com/forum/index.php/topic/70384-post-your-voltmeter-mount-pics/ I like the mirror install except the wire issue, if you don't have the socks