Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts New!  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
what is this relay and where does this wire go?
Forum Index -> Vanagon Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
Home Team Van
Samba Member


Joined: January 02, 2008
Posts: 465
Location: wilmington, nc
Home Team Van is offline 

PostPosted: Thu Dec 04, 2008 11:31 am    Post subject: what is this relay and where does this wire go? Reply with quote

I'm having some electrical issues in my 82 Diesel so I decided to clean all the grounds on the two blocks under the dash before I go any further. I see that this wire is loose from something( it's the fatter one coming out the bottom center of the relay) and obviously want to put it back. I'm just awful( but trying) when it comes to reading the wiring diagram in the Bentley. Thanks.

Image may have been reduced in size. Click image to view fullscreen.

_________________
_________________________________

82 Diesel Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
erdonline
Samba Member


Joined: September 26, 2004
Posts: 926
Location: CT
erdonline is offline 

PostPosted: Thu Dec 04, 2008 11:47 am    Post subject: relay Reply with quote

What are the numbers on the relay? That might give some indication of where the wires go. Can you trace any of the wires to the relay?

Ed in CT
_________________
'85 Vanagon Westfalia
'84 Vanagon 7-passenger
'98 Mexican air-cooled Beetle
Back to top
View user's profile Send private message Classifieds Feedback
Home Team Van
Samba Member


Joined: January 02, 2008
Posts: 465
Location: wilmington, nc
Home Team Van is offline 

PostPosted: Thu Dec 04, 2008 12:33 pm    Post subject: Reply with quote

I can't really see where the wires are going but I did pull the relay and the part # is 171 937 503 SJR. the #'s by the spades are 30, 86, 87, and 85.
12volt 40 amp.
_________________
_________________________________

82 Diesel Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
crazyvwvanman
Samba Member


Joined: January 28, 2008
Posts: 9031
Location: Orbiting San Diego
crazyvwvanman is offline 

PostPosted: Thu Dec 04, 2008 1:12 pm    Post subject: Re: what is this relay and where does this wire go? Reply with quote

Looks like the radiator fan high speed relay.

Mark



Home Team Van wrote:
I'm having some electrical issues in my 82 Diesel so I decided to clean all the grounds on the two blocks under the dash before I go any further. I see that this wire is loose from something( it's the fatter one coming out the bottom center of the relay) and obviously want to put it back. I'm just awful( but trying) when it comes to reading the wiring diagram in the Bentley. Thanks.

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Home Team Van
Samba Member


Joined: January 02, 2008
Posts: 465
Location: wilmington, nc
Home Team Van is offline 

PostPosted: Thu Dec 04, 2008 1:52 pm    Post subject: Reply with quote

thanks Crazy. If I'm reading the Bentley correctly(97.40) this loose red wire(12g) which is connected at bottom of the relay with a blue/red wire would connect to the back of the fuse panel #7?
_________________
_________________________________

82 Diesel Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
erdonline
Samba Member


Joined: September 26, 2004
Posts: 926
Location: CT
erdonline is offline 

PostPosted: Thu Dec 04, 2008 1:59 pm    Post subject: relay Reply with quote

Whatever it is, it is a basic single pole, single throw relay that gives power to one thing when some other circuit has power.

30 is from the battery, 86 is the trigger wire, 85 is ground, and 87 is the "out" so that when 86 is live, it connects 30 and 87.

If it is a relay without a resistor, the polarity doesn't matter, so 30 and 87; and 85 and 86 can sometimes be reversed.

Edit- I just had one other thought- You could just connect the wires from terminals 30 and 87 and see what comes on. (Might be the two heaviest wires- both red?) Now, I'd be cautious because you don't know what it controls. If for some reason someone put a starter relay there, it might engage your starter, or who knows what, but if you put it in neutral, set the parking brake, and listen as you touch the two wires together, you might hear or see something come on. If it is indeed a radiator fan high speed relay, you'll hear it come on.

Ed
_________________
'85 Vanagon Westfalia
'84 Vanagon 7-passenger
'98 Mexican air-cooled Beetle
Back to top
View user's profile Send private message Classifieds Feedback
crazyvwvanman
Samba Member


Joined: January 28, 2008
Posts: 9031
Location: Orbiting San Diego
crazyvwvanman is offline 

PostPosted: Thu Dec 04, 2008 7:11 pm    Post subject: Reply with quote

Yes, that is right. The red wire is power for high speed fan, from fuse #7, same side of #7 as a red/black wire of same size that powers low speed fan. One concern is that the large brown wire you showed unplugged is possibly the ground wire for both speeds of the fan so the fan would then not work at all until that is connected.

Mark


Home Team Van wrote:
thanks Crazy. If I'm reading the Bentley correctly(97.40) this loose red wire(12g) which is connected at bottom of the relay with a blue/red wire would connect to the back of the fuse panel #7?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Home Team Van
Samba Member


Joined: January 02, 2008
Posts: 465
Location: wilmington, nc
Home Team Van is offline 

PostPosted: Fri Dec 05, 2008 3:30 pm    Post subject: Reply with quote

Mark and Ed- thanks to both of you. Mark, the loose wire was the red wire not the brown one. It's now connected back at the fuse box and I can here the fan come on. Now, I can get back to my OTHER electrical issues. Thanks again to everyone that chimed in.
_________________
_________________________________

82 Diesel Westy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Vanagon All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
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

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2020, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB