Advertise on DISCO4.COM
Forum · Gallery · Wiki · Shop · Sponsors
DISCO4.COM > Camping, Caravanning and Holidays

Wiring of 12 volt water pump.
Post Reply  Down to end
Page 1 of 1
THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4
Wiring of 12 volt water pump.

I have had to replace the Shurflo water pump in my caravan. A perfectly straight forward job so I thought. Old pump out, new pump in. However when undoing the (household type) connectors there was a "U" shaped wire link looped between wires i.e. black and red. The link has a little black cylinder in the middle. The cylinder has a small silver mark at one end, but I have no idea what it is. It came out with the two wires and I have no idea which way to put it back. Is there a flow direction that is important? I suspect that it is there to supress radio intereference from the pump. Any help please.l
  
Post #88843125th Jan 2012 5:10 pm
View user's profile Send private message View poster's gallery Reply with quote
wiggs
 


Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

proberly a Diode ...its there to stop you putting power the wrong way to the pump
 G4 Gone ...but not forgotten  
Post #88843425th Jan 2012 5:19 pm
View user's profile Send private message View poster's gallery Reply with quote
THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

Thanks Wiggs. Is there a right or wrong way to replace the Diode if that is what it is?
  
Post #88857525th Jan 2012 8:26 pm
View user's profile Send private message View poster's gallery Reply with quote
NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

Is the silver mark a ring around the entire circumference of the component? If it is a diode then this denotes the cathode (-ve) and if you were to connect this side to the negative supply and the other to positive then you'd get current flow and therefore a dead short (i.e. not what you want). That's if it's wired in parallel across the connections. If it was in series that would be different... could you post a picture of said component?
  
Post #88860125th Jan 2012 9:01 pm
View user's profile Send private message View poster's gallery Reply with quote
wiggs
 


Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

Basic info for you

The most common function of a diode is to allow an electric current to pass in one direction (called the diode's forward direction), while blocking current in the opposite direction (the reverse direction). Thus, the diode can be thought of as an electronic version of a check valve.

As said a piccy would help Thumbs Up
 G4 Gone ...but not forgotten  
Post #88860625th Jan 2012 9:11 pm
View user's profile Send private message View poster's gallery Reply with quote
THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

Yes there is a silver ring completely around the diode. All I can add is that there are 2 wires +ve and -ve to the domestic type connectors and then 2 wires running to the pump. Also +ve and -ve. I have wired up without the diode and the pump runs fine. I have absolutely no idea how to post a picture on the site. Is the anyway I can test the flow through the diode. I did speak to the caravan manufacturer but the compamy has changed hands and they no longer fit the diode.
On the black body of the diode are the letters 1N5401 and underneath G04:
  
Post #88864625th Jan 2012 10:19 pm
View user's profile Send private message View poster's gallery Reply with quote
wiggs
 


Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

The letters do show it as a diode ..

It should only flow voltage one way .. So quite easy to test .
 G4 Gone ...but not forgotten  
Post #88865225th Jan 2012 10:33 pm
View user's profile Send private message View poster's gallery Reply with quote
woody32
Site Sponsor 


Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551

United Kingdom 2007 LR3 3.0 TDV6 SE Auto Bonatti GreyLR3

The diode goes silver strip to the positive side of the wire and the other side of the wire so links over to your earth side this will be at the connector end where it plugs into the pump its a way of dumping voltage quicker when you turn the pump off but will work fine without it fitted Thumbs Up

a bit like this http://www.google.co.uk/url?source=imgland...rod1MeYtMQ

I hope Shocked
 Wanted D4s non runners pm for competitive price.
IID Pro MV License - D3/4 RRS - Enabling, Updates,Transmission flushing.
Mobile or workshop,PM for details.
 
 
Post #88869626th Jan 2012 1:16 am
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
THUB
 


Member Since: 10 Dec 2005
Location: West Berkshire.
Posts: 717

United Kingdom 2012 Discovery 4 TDV6 HSE Auto Nara BronzeDiscovery 4

Thanks for the advice and replies. All sorted and running fine. Much appreciated.
  
Post #88877126th Jan 2012 10:41 am
View user's profile Send private message View poster's gallery Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO4.COM Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums

DISCO4.COM is independent and not affiliated to Land Rover.
Switch to Mobile Site