Voltmeter/volt gauge installation

i'm about to buy a voltmeter for my accord but i'm not sure how to install one. any know how or can link me to a site. thanks

A voltmeter is easy. It connects across the battery with a switch to keep from draining the battery when not in use or you can use the cigar lighter outlet. The voltage is the same and with the cigar lighter, power is off when the key is off.

sweeeet. thanks man