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

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 08-22-2012, 12:01 PM   #1
Junior Member
 
Join Date: Aug 2012
Posts: 3
electrical problem

I have a 1990 Sportcoach IV diesel pusher that had a close encounter with a lightining strike, it was not actually hit by lightining but was very close to the strike, about 3 feet away. Since that time I have had several circuit board failures, the main one being the engine contoler on the diesel generator.

The other problems I have addressed and repaired or am repairing, but the problem with my water pump has me pulling what little hair I have left out by the roots. I have checked the pump, and there is power to the pump, and if I ground the negative wire the pump runs and stops as designed. The problem is the three switches that turn the pump on do not work. The switches, one in the gallay, one in the bath and one in the utillity cabinet,will not activate the pump. The wiring from the three switches is bell type wire an probably activate a relay or switching circuit board that completes the ground circuit to the pump. The switches all have a small circuit board as part of the switch but I do not think they are the problem as the wiring from the switch does not go to the pump, and they are too small to carry the pump electrical load.

My question is where is this relay, or circuit board located and what does it look like? I have searched for hours and it is impossible to trace the wiring to the relay or ? because the wires are all in a very large wireloom.

I really would appreciate any help in locating this so I can fix the pump switches.
__________________

__________________
ridgerunner1 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 08-22-2012, 02:27 PM   #2
Senior Member
 
Jim_HiTek's Avatar
 
Join Date: Nov 2011
Location: Full time RV'er
Posts: 1,654
Mine is located on a side wall in the same compartment as the water pump.
__________________

__________________
'02 Winnebago Journey DL, DSDP, 36' of fun.

Visit my RV Travel & Repair Blog at : http://chaos.goblinbox.com
Jim_HiTek is offline   Reply With Quote
Old 08-22-2012, 02:32 PM   #3
Senior Member
 
Theberrys's Avatar


 
National RV Owners Club
Join Date: Jun 2009
Posts: 2,605
Check this thread Shurflo Water Pump Fuse post #7 has a link to the pump controller your looking for.

Dick
__________________
1999 Tradewinds 7372 Cat 3126
Albuquerque, NM
Theberrys is offline   Reply With Quote
Old 08-22-2012, 03:14 PM   #4
Senior Member
 
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,217
RidgeRunner1-
1), You're going to find lots of helpful info here.
2) you can use a "tone generator" to follow the pump wire to the blown fuse or relay or circuit board. I just went to the iRV2 Forum home page and did a Search on "tone generator" which gave 28 threads. Of those, some are obviously useless, but the ones on coax cable or other wiring should give you some leads on what that is and how to use it to trace a circuit. Handy tool for a motorhomer. Saves having to break a wire loom apart in most circumstances.
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
EngineerMike is offline   Reply With Quote
Old 08-23-2012, 07:25 AM   #5
Senior Member
 
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,608
I would go to all 3 switches and listen for a click when you push them. If you hear the click, that's your relay or controller (whatever you want to call it)....

Unfortunately, it could be anywhere, but normally it would be clustered with a fuse panel or main wiring harness junction. I doubt it would be in the under dash or under the hood if that saves you any trouble.
__________________
1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
ahicks is offline   Reply With Quote
Old 08-23-2012, 05:20 PM   #6
Junior Member
 
Join Date: Aug 2012
Posts: 3
Thank you all for the helpful ideas. I now know what to look for and I have a tone generator that I think will work. I have checked the fuzes and they are ok, I think the lightning fried the pump controller just as it fried several other printed circuit devices.

I will check and see if i can find the controller when I get home tomorrow. Thanks again for the help, I will let you all know what I find.
__________________
ridgerunner1 is offline   Reply With Quote
Old 08-24-2012, 09:28 AM   #7
Senior Member
 
Theberrys's Avatar


 
National RV Owners Club
Join Date: Jun 2009
Posts: 2,605
Hand over Hand the wire on the '-' connector of the pump and it will take you right to the controller, most controllers are very close to the pump.

Dick
__________________
1999 Tradewinds 7372 Cat 3126
Albuquerque, NM
Theberrys is offline   Reply With Quote
Old 08-28-2012, 12:16 PM   #8
Junior Member
 
Join Date: Aug 2012
Posts: 3
Smile electrical problem

Thank all of you for your help and information. I was able to find the pump controller once I knew what to look for. The controller is attached to the main breaker box in the electrical bay, next to the battery bay, on the passenger side of the motorhome. It is in plain sight and very accessible, but on the opposite side of the motorhome from the pump. I tested the controller and it is fried, so I will be ordering a new one.

Thank you all very much for the help and information. Problem solved for this part.
__________________

__________________
ridgerunner1 is offline   Reply With Quote
Reply

Tags
electrical



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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:28 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.