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Home Team Van Samba Member
Joined: January 02, 2008 Posts: 465 Location: wilmington, nc
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Posted: Fri Dec 05, 2008 3:30 pm Post subject: |
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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 |
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crazyvwvanman Samba Member
Joined: January 28, 2008 Posts: 9936 Location: Orbiting San Diego
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Posted: Thu Dec 04, 2008 7:11 pm Post subject: |
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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? |
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erdonline Samba Member
Joined: September 26, 2004 Posts: 943 Location: CT
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Posted: Thu Dec 04, 2008 1:59 pm Post subject: relay |
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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 |
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Home Team Van Samba Member
Joined: January 02, 2008 Posts: 465 Location: wilmington, nc
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Posted: Thu Dec 04, 2008 1:52 pm Post subject: |
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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 |
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crazyvwvanman Samba Member
Joined: January 28, 2008 Posts: 9936 Location: Orbiting San Diego
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Posted: Thu Dec 04, 2008 1:12 pm Post subject: Re: what is this relay and where does this wire go? |
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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.
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Home Team Van Samba Member
Joined: January 02, 2008 Posts: 465 Location: wilmington, nc
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Posted: Thu Dec 04, 2008 12:33 pm Post subject: |
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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 |
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erdonline Samba Member
Joined: September 26, 2004 Posts: 943 Location: CT
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Posted: Thu Dec 04, 2008 11:47 am Post subject: relay |
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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 |
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Home Team Van Samba Member
Joined: January 02, 2008 Posts: 465 Location: wilmington, nc
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Posted: Thu Dec 04, 2008 11:31 am Post subject: what is this relay and where does this wire go? |
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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.
_________________ _________________________________
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