adding a voltmeter and USB ports

[RedTailHawk]

I just picked up one of these voltmeters, which also includes a USB and DC12V power outlet: http://www.amazon.com/gp/product/B00WLFU7QY?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00

I was planning to mount it on the lower panel below steering wheel on my L3430DT-F. Didn't realize that each would need to be wired separately. I haven't messed around behind the dash panel. Any suggestions on where to run the wiring?'

 

[85Hokie]

the usb port and the volt meter will not need a lot of anything as far as wiring, the volt meter will draw very little amps, the USB will draw a little as you charge your phone or whatever - the 12v out plug will need to be a good size fuse. Reading the reviews, seems like a well made system - no waterproof however. I did read where one dumb SB wired the volt meter to the battery and could not understand why the battery dies over time......... also read where the volt meter is slightly off too, but for the cost, seems like a simple effective system. Further reading the USB seems to draw about 2 amps according to one review, I would hook the 12v out to a 10 fuse depending on the wire and use of the plug.

All of these will need a circuit tied in with the key, unless you want the USB and PLUG used with machine off. The volt meter should not be wired directly - cause it would draw just a weeee bit of power all the time. I would set up relay to cut them on, wired to battery then tripped by key switch unless you want the first two hot all the time. If you want all of them to be wired through a relay - they could all be run in parallel.

 

[RedTailHawk]

I don't see any need to have them run without the key on. I'll connect them all to a switched circuit. Now just need to figure out where to tap into one...

 

[seanbarr]

You could use an ignition delay module, which would continue to supply power until it turns off after a predetermined set time automatically.

I use the one in the middle. (The left is a 150a relay that is used with the timer but is not used for under 20a applications) It's small and simple to wire and has time settings on the bottom.


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