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12 volt dash outlets

Have searched but was unable to find:

2 dash 12v outlets - Side by side - Which one is the engine batteries and which is house?  :facepalm:
Scott & Carol Seibert
2001 42' double slide U320 - Sold
Previous - 2002 36' U320

Re: 12 volt dash outlets

Reply #1 –

Pick up one (or two) of those cheap lighter socket voltmeters.  They are available in many auto parts stores, or online.  Plug it in one of the outlets, and crank the engine.  If the voltage drops, that is the start battery outlet.  If it doesn't, you are in the house battery outlet.

Two plug-in voltmeters are nice to have.  Leave them in the lighter sockets all the time for a quick comparative check of battery bank condition.

Amazon.com: LCD Cigarette Lighter Voltage Digital Panel Meter Volt Voltmeter...

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: 12 volt dash outlets

Reply #2 –
I use a pair of these.

Car Charger 5V/3.1A Quick Charge Dual USB Port Cigarette Lighter Adapter New...

They have two USB ports and show voltage until something is plugged into one or both ports, then show usb current. Pretty cool in a nerdy way.
Tom Lang K6PG (originally  KC6UEC)
and Diane Lang
2003 38 U295 build 6209
2016 Jeep Grand Cherokee Summit Ecodiesel
still have tow-ready 2006 Acura MDX 
Temple City, California
Motorcade 16681 California Chapter President
SKP 16663 member of SKP Park of the Sierra, Coarsegold California
FMCA F071251
Retired electrical and electronic engineer

Re: 12 volt dash outlets

Reply #3 –
......OR......turn on the ignition switch and watch the dash volt gauge. Push in the cigarette lighter and if the gauge moves slightly that's the start battery plug.
1994 U280, Build 4490
Deming, NM.
 

Re: 12 volt dash outlets

Reply #4 –
Scott, one of mine has a rubber cap.  Pretty sure that one is the on all the time one. Or it is the other way around.

If you are getting a 12v charger for a laptop be sure to get one that is certified for quick charge QC 2.0 or QC 3.0. 
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN