RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 04-12-2017, 06:34 PM   #1
Senior Member
MarkK's Avatar
Join Date: Mar 2017
Location: OTR Western US
Posts: 233
Running Lights Low Voltage

This is on a 2003 Chinook Destiny.

Checking the trailer 4-way flat connector as I move toward getting things ready for a towed. As I check voltage at one of the tailights I find the left bank at About 12.78 V for brake light, and the 4-way yellow for left brake light signal at the same, yet the green right voltage reading is at 12.2V, so not so bad, I just don't understand why there is a difference and whether this would be an issue. Issue is when I check the Destiny's running lights I see they are what I would consider dim reading 11.2V, and the 4-way brown wire reads 11.3 and wonder if this is something that is normal, or do I need to chase wires to find out why the voltage is so low and increase it?

I plan on towing a 2014 CRV, using a RVI3, Custer wireless brake/signal set up, and Roadmaster brake relay cut out along with the accessory fuse cut out to reduce battery drain. The CRV will get a grp 35 Optima Yellow top with more CCA than stock, but the longevity to run the RVI3 while towing.


MarkK is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 04-14-2017, 09:59 PM   #2
Senior Member
MarkK's Avatar
Join Date: Mar 2017
Location: OTR Western US
Posts: 233
I get to answer this myself after making many calls to RV shops. Short answer, I was testing the current without the engine running. With the engine running I show 12.2V at the running lights, brakes were 13.2V left, 12.6V right. Good to go I suppose.

MarkK is offline   Reply With Quote
Old 04-14-2017, 11:01 PM   #3
Senior Member
Isaac-1's Avatar
Join Date: Jun 2016
Location: SW Louisiana
Posts: 2,408
This is likely due to corrosion on wire splices and connections that have built up over the last 15 years. If the bulbs are dim consider swapping them out for LED's as LED's consume far fewer amps so will cause less voltage drop on marginal connections. A complete set of LED marker, brake and turn signal lights should be under $30 on amazon.
Isaac-1 is offline   Reply With Quote

light, lights

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
AGS start voltage vs Low Voltage Cutoff pilotspike Newmar Owner's Forum 8 04-25-2016 11:06 AM
Battery Voltage Sag and Low Voltage Cutoff Pullin' Chocks RV Systems & Appliances 8 08-19-2014 11:46 PM
turn signals, running lights, tow lights side clearance lights not working gowhiz Tiffin Motorhomes Owners Forum 3 02-26-2014 08:02 AM
Battery Voltage How Low is TOO LOw??? Latitude MH-General Discussions & Problems 5 01-08-2008 03:11 PM
Low voltage at running lights. TallPaul RV Systems & Appliances 4 07-28-2007 06:50 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:14 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.