1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Alternator Wiring Problem

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Old Apr 17, 2007 | 04:03 PM
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Alternator Wiring Problem

So as i'm removing and cleaning some of the wiring in the engine bay, I noticed that I've disconnected one that maybe I shouldn't of had. Its the WB wire behind the alternator. Looking at some diagrams, that wire goes to the choke and check relay by the driver side which I unhooked because people told me I don't need it. So this was one of the wires on there Iguess and took it out. What do I do?
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Old Apr 17, 2007 | 04:10 PM
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Pix of a clean harness wherein the unneeded wire have been removed. The remaining wires are for water temp, alternator and oil pressure.

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Old Apr 17, 2007 | 04:19 PM
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The wire i'm talking about hooks up to the smaller connection
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Old Apr 17, 2007 | 04:21 PM
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the white black wires on there ... on one side, it hooks up to the alternator ... the other side is the one that I've removed hooked up to the choke and check relay IIRC
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Old Apr 17, 2007 | 04:26 PM
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Without the check relay your idiot lights will come on.
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Old Apr 17, 2007 | 04:26 PM
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also the balck yellow line off that black connector (I don't think that I had it hooked up anywhere) I removed it and Ithink that wire went to the transmission harness by the driver side and looking at the FSM ... i think its only for auto trannys right?
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Old Apr 17, 2007 | 04:28 PM
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Originally Posted by REVHED
Without the check relay your idiot lights will come on.
which light would come on? and also how would I disable it? Just grounding it or feeding power to it?
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Old Apr 18, 2007 | 03:46 AM
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For the alternator and warning light to remain functional you need the relay. You can replace it with a new automotive relay. This is what I did.

This diagram should help. If you're still using the choke you need a relay with an 87a out to which you connect the LR wire.

Attached Thumbnails Alternator Wiring Problem-relay.jpg  

Last edited by REVHED; Apr 18, 2007 at 04:10 AM.
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Old Apr 18, 2007 | 10:01 AM
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I'm not using the manual choke i have a vacum choke that is used. The yellow blue wire should be going to the driver side harness and right into the back of the dash right?
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Old Apr 18, 2007 | 10:06 AM
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also what is the part number for these types of relays?
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Old Apr 18, 2007 | 10:34 AM
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It appear to me that you havent done your homework nor done any research.

its a fog lights relay. its either the bosch or the other brand with 2 87 terminals.
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Old Apr 18, 2007 | 10:45 AM
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I kinda did ... this was from another post link and knew about it ... but i couldn't see them post any part number. So are they just called Bosch SPDT(Single Pole Double Trhow) relays?

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Old Apr 18, 2007 | 11:01 AM
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OIC.
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