Connecting Fan 2 Wiring to Auto/On/Off Switch

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Discussion Overview

The discussion revolves around the wiring of FAN 2 to an AUTO/ON/OFF switch, focusing on how to connect the relay and the implications of grounding in the circuit. The scope includes technical explanations related to electrical wiring and relay functionality.

Discussion Character

  • Technical explanation

Main Points Raised

  • One participant expresses confusion about the lack of a negative side to the coil on the relay and questions whether their proposed connection will work.
  • Another participant clarifies that the fan relays are grounded by the PCM, indicating that certain connections function as switches to connect the relays to the negative side of the source.
  • A participant outlines a proposed connection scheme involving A10, ground, and the feed lead, seeking confirmation on its correctness.
  • A later reply agrees with the proposed connection scheme, suggesting it appears correct.

Areas of Agreement / Disagreement

While there is some agreement on the proposed wiring scheme, the initial confusion about the relay's negative side indicates that not all aspects of the discussion are resolved, and uncertainty remains regarding the overall setup.

Contextual Notes

The discussion does not clarify specific assumptions about the wiring setup or the definitions of terms used, which may affect interpretations of the proposed connections.

layzurguy
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24094d1171762218-does-anyone-have-electric-fan-relay-diagram-auto-fan-wiring.gif


fan_schematic_1995.jpg


What I'm tring to do is connect FAN 2 Wiring (673 DKBLU 2nd picture top diagram) to
The Auto pole of the AUTO/ON/OFF switch so I can manually activate the FAN if needed.

I'm a little confused since in the 2nd pic, I don't see a Negative side to the coil on the relay.
Can/will this work?
 
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The fan relays are "grounded" by the PCM. In other words, A10 and A11 are working like switches that connect the relays to the negative side of your source.
 
So...
I would connect:
A10 to the AUTO side of the switch
Ground to the ON side of the switch
The feed lead to the Negative side of the Coil

Is this correct?
 
Yes. That's the way it looks to me.
 

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