Jayco RV Owners Forum

Thread Tools Display Modes
Old 07-23-2014, 09:16 AM   #1
Senior Member
Join Date: May 2013
Posts: 645
How to wire DC Voltmeter

Hey all, I'm looking to install a DC voltmeter (wired into the back of my converter) to monitor my 12V power supply. I have read the threads on here about it and understand the concept, I'm just not certain about where to actually tap the wires into on the back of my converter.

I have the WF-8955PEC converter if that helps. Electric guys chime in!

SkyBound is offline   Reply With Quote
Old 07-23-2014, 05:22 PM   #2
Senior Member
Threebutchers's Avatar
Join Date: Mar 2013
Location: Planet Earth
Posts: 6,818
Most WFCO Converters have a wiring diagram on the back. They also come with pigtail 12V wires so all your splice connections should be close by in the back of the converter.

Threebutchers is offline   Reply With Quote
Old 07-23-2014, 06:52 PM   #3
Senior Member
Join Date: Aug 2013
Location: NC
Posts: 923
Voltmeters are wired in parallel with any 12vdc output circuit. That means you find a 12volt positive and wire the meter positive to it, likewise find a dc ground and wire the meter negative to it.
No man has a good enough memory to be a successful liar. Abraham Lincoln

2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch
eldermike is offline   Reply With Quote
Old 07-23-2014, 10:36 PM   #4
Senior Member
Join Date: May 2013
Location: Dale Hollow Lake Tn/Ky
Posts: 1,375
Still confused. I need wiring for dummies I guess. I guessing U don't just find a + and a - cable, but rather one carrying all the load from the battery? Suggestions on how to find and tap into the right ones.
Bassdogs is offline   Reply With Quote
Old 07-24-2014, 05:35 AM   #5
Join Date: Jun 2013
Location: North Central Louisiana
Posts: 96
There is a POS and a NEG connector on the DC power distribution/fuse board.

If you are using an external fuse in your meter circuit, then hook up here.

If you have an unused DC fuse position, then hook the positive wire to that position, install a 1 amp fuse and hook the negative wire to the NEG connector.

If you only want to measure the converter output, use an externally fused circuit hooked to the VCC+ and NEG connectors.
Mike Laupp

'13 Jayco Premier 351RLTS

'11 F250 CC FX4 6.7L TD SRW
mjlaupp is offline   Reply With Quote
Old 07-24-2014, 07:45 AM   #6
Senior Member
Mustang65's Avatar
Join Date: Nov 2012
Location: Clearwater, FL area
Posts: 2,379
Search the net for your model's documentation. It shows a diagram of all the connections including your Pos and Neg terminals from the battery.

2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package

Our Solar Album http://www.jaycoowners.com/album.php?albumid=329
Mustang65 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 06:35 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.