Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Alpine Coach Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 03-02-2015, 01:08 PM   #1
Senior Member
tjshively's Avatar
Alpine Owners Club
Join Date: Aug 2010
Location: Cincinnati, OH
Posts: 183
Solenoid Question

2005 Alpine Coach 36 FDDS
What is the solenoid bolted to back wall of the battery compartment (actually in the engine compartment above the battery filler reservoir) do? What is it for?

tjshively 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 03-02-2015, 02:12 PM   #2
Senior Member
Old Scout's Avatar
Join Date: Nov 2005
Posts: 4,233
There is a very long thread on this forum that responses to your question--in fact, Dave's earlier input to your thread was pointing you in that direction. Not to cover old ground, but here goes--the solenoid on the back of the battery bulkhead is the secondary to the primary on the starter itself. The starter and primary solenoid are hot-wired to the battery bank via hi-amp cables. The secondary solenoid is tied to the ignition switch via low-amp wire [eg 10ga]. You can test whether the ignition switch is providing power to the secondary solenoid by testing the smaller ternminal[s] for voltage once the switch is placed in the start position. You can also see if the primary solenoid and starter will function by jumping the two large terminals on the secondary. Again, there is a substantial thread on this forum about the secondary failing [either open or closed]. If open, it wont start; if closed, the starter can run away and over heat....keep us posted.....

Old Scout
2003 40' MDTS
Garden Ridge, Texas
Old Scout is offline   Reply With Quote
Old 03-02-2015, 03:41 PM   #3
Senior Member
Dave Fernandez's Avatar
Alpine Owners Club
Join Date: Jun 2003
Location: Ontario, CA USA
Posts: 1,305
There is also a large black solenoid for Battery Boost, which will connect both battery banks together to help start when one bank is dead.
Dave Fernandez
2001, 38ft FDDS, 350 ISC, Tow 2004 Yukon
Dave Fernandez is offline   Reply With Quote
Old 03-02-2015, 03:52 PM   #4
Senior Member
Tireman9's Avatar
Commercial Member
Join Date: Mar 2010
Location: Akron, Ohio
Posts: 1,580
Comment on solenoids in general. There are intermittent and constant use solenoids. A solenoid that shunts 150 Amp to a starter motor may burn out if a constant 30Amp load were applied.

If you are replacing a solenoid or developing a new wiring system or application be sure you know the max amp rating needed and the length of time those amps will be applied.
Retired Design & Quality Tire Eng. Read my tire blog RVTireSafety.NET to learn more about RV tires, valves & wheels. Read THIS post on why Tires Fail
Tireman9 is offline   Reply With Quote
Old 03-03-2015, 10:09 AM   #5
Senior Member
tjshively's Avatar
Alpine Owners Club
Join Date: Aug 2010
Location: Cincinnati, OH
Posts: 183
Old Scout
I found that thread. Very Interesting. Thanks again.

TJ Shively
2005 Alpine Coach 36' FDDS
Cincinnati, OH
tjshively is offline   Reply With Quote

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
Headlight question plus bonus dash NAV fuse question jbmoberly76 Newmar Owner's Forum 3 02-07-2015 04:19 AM
Disassemble/clean Solenoid in HWH Leveling System kwseeger RV Systems & Appliances 6 06-21-2014 04:47 PM
Apex Battery Solenoid vs. Isolator casper124 Alpine Coach Owner's Forum 12 05-10-2014 08:27 AM
Secondary starter solenoid tiredvet Alpine Coach Owner's Forum 13 04-25-2014 02:43 AM
Accessory Solenoid Koop Alpine Coach Owner's Forum 7 04-22-2014 05:59 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:00 PM.

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