 |
02-27-2010, 10:54 AM
|
#1
|
|
Senior Member
Tiffin Owners Club
Join Date: Feb 2010
Posts: 331
|
Help me understand relays/solenoids
I mentioned in another thread that I need to replace the charging solenoid/relay in our new-to-us Allegro bus:
It was suggested by Cruzer that I replace it with this bad boy:
Here's where I need help---
This is my what my existing relay looks like, notice it has 2 battery cable lugs and ONE 12v input lug. After a little research I've found this is a "coil grounded to case" relay..
This is the same relay, but with TWO 12v input(?) lugs, this is an "isolated coil" relay:
The 200 amp bad boy relay is available ONLY in the isolated coil version. So I have a simple question: Do I have to run a jumper from the 2nd 12v input lug to ground for the relay to work? (and if so, it shouldn't matter which lugs I use for + and - should it?)
__________________
2000 40' Tiffin Allegro Bus \ 2002 Regal 2860 Commodore
1988 53 x 14 Skipperliner \ 1995 32' Party Cruiser
1984 Goldwing Aspencade \ 1976 Harley Sportster
|
|
|
 |
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!
|
|
02-27-2010, 04:38 PM
|
#2
|
|
Senior Member
Workhorse Chassis Owner
Join Date: Jun 2008
Location: Hermitage, TN
Posts: 127
|
Playitforwards: You got this one right. If it were me-----if the relay is mounted on a metal base-----I would run a short jumper from one contact around the corner to under a mounting bolt/lug or what ever. That would be your ground. The rest would be straight forwards from the orgional.
Quote:
"The 200 amp bad boy relay is available ONLY in the isolated coil version. So I have a simple question: Do I have to run a jumper from the 2nd 12v input lug to ground for the relay to work? (and if so, it shouldn't matter which lugs I use for + and - should it?)"
Marty
|
|
|
|
|
02-27-2010, 07:39 PM
|
#3
|
|
Senior Member
Tiffin Owners Club
Join Date: Feb 2010
Posts: 331
|
Thanks Marty! 
__________________
2000 40' Tiffin Allegro Bus \ 2002 Regal 2860 Commodore
1988 53 x 14 Skipperliner \ 1995 32' Party Cruiser
1984 Goldwing Aspencade \ 1976 Harley Sportster
|
|
|
|
|
02-28-2010, 11:11 AM
|
#4
|
|
Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
|
Quote:
Originally Posted by PlayItForwrd
The 200 amp bad boy relay is available ONLY in the isolated coil version. So I have a simple question: Do I have to run a jumper from the 2nd 12v input lug to ground for the relay to work? (and if so, it shouldn't matter which lugs I use for + and - should it?)
|
Yes, just run a jumper from one of the two small terminals to one of the mounting bolts... The other small terminal gets the control wire. (the existing small terminal wire)
I've worked with both kinds and had to run a jumper more than once.
__________________
Home is where I park it!
|
|
|
|
|
03-01-2010, 01:16 AM
|
#5
|
|
Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Sep 2007
Posts: 2,976
|
Quote:
Originally Posted by wa8yxm
Yes, just run a jumper from one of the two small terminals to one of the mounting bolts... The other small terminal gets the control wire. (the existing small terminal wire)
I've worked with both kinds and had to run a jumper more than once.
|
what size wire should this jumper be? 
__________________
01 WINNEBAGO 35U W20.8.1L 5sp allison SW Wa,. Good Sam, SKP. RVM 198 AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. Michelins, TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '21MB GLA FWD on dolly 
|
|
|
|
|
03-01-2010, 08:22 AM
|
#6
|
|
Moderator Emeritus
Join Date: Oct 2002
Location: Sheboygan, WI
Posts: 5,644
|
Same size as the input wire. It's probably a 16 gauge wire, which is capable of handling up to 10 amps. That's more than what the solenoid coil wil ever use. It never hurst to go larger though, even though it's not needed.
On the newer Bus there is a ground lug buss bar at the top of the compartment where all of the ground wires go to. If you have one of these I'd run the wire right up there and insert it into one of the ground lug screws.
If you don't have a buss bar handly then be sure to use start lock washers when you attach the ring terminal on the end of the wire to the bolt that will br your ground point. That'll help bit into the terminal and make a good connection. Also be sure that the bolt your are connecting to is a good ground source, not something that's attached to an insulated surface. I'd rather run a longer wire to get a good ground than a short wire to a questionable ground.
__________________
Mark & Leann Quasius
2016 Cornerstone 45A
2020 Jeep Gladiator Rubicon
2021 Jeep Wrangler Rubicon
|
|
|
|
|
03-01-2010, 08:40 AM
|
#7
|
|
Senior Member
Tiffin Owners Club
Join Date: Feb 2010
Posts: 331
|
Thanks guys! --and there IS a ground bus bar on my panel--
--I'll be sure to use it!
__________________
2000 40' Tiffin Allegro Bus \ 2002 Regal 2860 Commodore
1988 53 x 14 Skipperliner \ 1995 32' Party Cruiser
1984 Goldwing Aspencade \ 1976 Harley Sportster
|
|
|
|
|
03-01-2010, 08:55 AM
|
#8
|
|
Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
|
Quote:
Originally Posted by Marty too
Playitforwards: You got this one right. If it were me-----if the relay is mounted on a metal base-----I would run a short jumper from one contact around the corner to under a mounting bolt/lug or what ever. That would be your ground. The rest would be straight forwards from the orgional.
Marty
|
In my 30+ years dinking with RVs, I have found that nothing about them is "straight forwards."
BTW, I learn something worthwhile from this forum every day. Thanks folks!
  
__________________
Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
|
|
|
|
|
03-01-2010, 09:28 AM
|
#9
|
|
Senior Member
National RV Owners Club
Join Date: Jun 2009
Posts: 2,618
|
Playit
It looks like you already have a ground to the existing relay.
Here is a picture of your relay with labels.
You will probably need to observe polarity on the ground and control wires. It should be shown on the body of the new relay.
Dick
__________________
1999 Tradewinds 7372 Cat 3126
Albuquerque, NM
|
|
|
|
|
03-08-2010, 02:38 PM
|
#10
|
|
Senior Member
Tiffin Owners Club
Join Date: Feb 2010
Posts: 331
|
Got the new relay installed--
And--- Didn't get the bad boy, I wimped out...
... was online checking out the Mouser website, the bad boy was just under $50, the original style (but with the extra terminal) was $16.67, 3 for 1... And buying the OE style meant no new installation worries, just remove the old, put in the new. Took about 5 minutes:
BTW, there was no markings on the terminals, so I just attached the ground to the top, the 12v input to the bottom (where it was on the original)...
Works like a charm! 
__________________
2000 40' Tiffin Allegro Bus \ 2002 Regal 2860 Commodore
1988 53 x 14 Skipperliner \ 1995 32' Party Cruiser
1984 Goldwing Aspencade \ 1976 Harley Sportster
|
|
|
|
|
03-08-2010, 03:01 PM
|
#11
|
|
Senior Member
National RV Owners Club
Join Date: Jun 2009
Posts: 2,618
|
PlayIt
Looks factory.
Good Job
Dick
__________________
1999 Tradewinds 7372 Cat 3126
Albuquerque, NM
|
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Linear Mode
