Thread Tools Display Modes
Old 02-21-2016, 11:17 AM   #1
Stinkielee's Avatar
Join Date: Apr 2015
Posts: 65
Are the coach and cab batteries interconnected?

I use a CPAP, and the only way I can run it while boondocking is to connect it to a small inverter connected to the cab cigarette lighter. My question is, does this cigarette lighter run off just the cab battery and not the nice dual batteries we have under the steps in the coach? How do I figure that out?

Sharon n Gary
RNKNP (Retired No Kids No Pets)
Always looking for great wine!
2015 Coachmen Freelander 22QBF | 1980 Toyota truck toad

Stinkielee is offline   Reply With Quote
Old 02-22-2016, 10:53 AM   #2
Site Team - Lou
Herk7769's Avatar
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,365
Not sure 100% with your rig, but I would guess it runs of the accessory fuse block on your engine (thus your starting battery).

Adding an accessory outlet wired (and fused) from your coach batteries would not be all that difficult. Make sure the socket is rated for the amp draw of your CPAP and fused accordingly. Red/black twin battery wire is very flexible and can be routed to your bedside area from one of your lighting fused DC circuits.

If you use the suggested socket below you will also get 2 USB charging outlets as well.

12 Volt socket

12 gauge hookup wire will carry 15 amps of 12 volt DC up to 30 feet.

Red 50 ft True 12 Gauge AWG Car Home Audio Speaker Wire Cable Spool BPES12 50 | eBay

12 gauge wire fuse holder for 15 amp fuse

Fuse Holder without fuse

FYI - The USB ports have a small current draw at all times due to the design. If you boondock and want to be able to switch off the 5 volt chargers I would install a switch next to the outlets or use an outlet without the USB chargers.

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
Herk7769 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

» Featured Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:10 PM.