A quick write-up on my procedure of installing an interior voltmeter. For anyone who's interested in a reference of the cars voltage on the fly.
Why?
-Monitor battery and alternator performance before getting stranded
-Recognizing an excessive voltage drain (or spikes) before a problem becomes a serious issue
-Use accessories when the engine is off while knowing when to start the car for a recharge
I bought a few of these on ebay, yes, they were cheap but they work pretty well and are perfect for custom applications
Accuracy +/- .1v Refresh rate about .5 seconds
I used the 12v dc cig lighter behind the glovebox for power and connected ground to one of the bolts holding the head unit housing
Removed the passenger side dashboard plastic cover, then removed the center dashboard plastic cover (pictured). Started my cutout for the meter by measuring where i wanted it then drilling a couple small holes followed by a good amount of filing down until the meter fit just right
Not perfect, but the flaws should be covered by the time im finished
Meter fits nice and snuggy
Also to help keep it in place i used a couple pieces of one-sided adhesive foam behind the cutout
Finished off by adding a piece of tinted film over the front.
Measures accurately and refreshes constantly
Thanks for looking!