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[Datsun 1200 encyclopedia]

Heater Wiring

(Difference between revisions)

Datsun 1200 encyclopedia | Recent changes | Switch to MediaWiki mode

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Categories: Body Electrical System | Heating And Ventilation Systems | Wiring

Revision as of 11:26, 10 January 2012
ddgonzal (Talk | contribs)

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Revision as of 18:06, 17 December 2012
ddgonzal (Talk | contribs)

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= Overview = = Overview =
-http://ddgonzal.members.winisp.net/drawThumb2.aspx?width=360&uri=datsun1200.com/modules/myalbum/photos/14924.jpg+[http://datsun1200.com/modules/myalbum/photo.php?lid=14924 fuse box heater circuit]
 +<br><img size=400>http://datsun1200.com/modules/myalbum/photos/14924.jpg</img>
-Heater Resistor+[http://datsun1200.com/modules/myalbum/photo.php?lid=23995 Heater Resistor]
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=23995 http://datsun1200.com/uploads/thumbs/23995.jpg]+<br><img size=400>http://datsun1200.com/uploads/photos/23995.jpg</img>
- +
-Location of resistor+
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=23994 http://datsun1200.com/uploads/thumbs/23994.jpg]+
 +[http://datsun1200.com/modules/myalbum/photo.php?lid=23994 Location of resistor]
 +<br><img size=400>http://datsun1200.com/uploads/photos/23994.jpg</img>
= Regular Wiring = = Regular Wiring =
When IG is on, heater fan motor is always "Hot". But the motor is not grounded until the heater switch is pulled out. When IG is on, heater fan motor is always "Hot". But the motor is not grounded until the heater switch is pulled out.
-[http://datsun1200.com/modules/myalbum/photo.php?lid=22237 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/22237.jpg]+[http://datsun1200.com/modules/myalbum/photo.php?lid=22237 wiring]
 +<br><img size=400>http://datsun1200.com/uploads/photos/22237.jpg</img>
Fan switch Position No. 1 is OFF Fan switch Position No. 1 is OFF
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Fan switch Position No. 3 is high-speed bypassing Resistor Fan switch Position No. 3 is high-speed bypassing Resistor
-Heater wire loom with B wire and Y, YR, wires:+[http://datsun1200.com/modules/myalbum/photo.php?lid=23994 Heater wire loom] with B wire and Y, YR, wires:
-<br>[http://datsun1200.com/modules/myalbum/photo.php?lid=23994 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/23994.jpg]+<br><img size=400>http://datsun1200.com/uploads/photos/23994.jpg</img>
<br>(the blue wire is not part of the heater circuit) <br>(the blue wire is not part of the heater circuit)
-[http://datsun1200.com/modules/myalbum/photo.php?lid=23997 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/23997.jpg]+[http://datsun1200.com/modules/myalbum/photo.php?lid=23997 fan switch]
 +<br><img size=400>http://datsun1200.com/uploads/photos/23997.jpg</img>
= 1972 USA = = 1972 USA =
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When key is at IGN, fan switch is "Hot". Position #1 is OFF. Position #2 connects to the fan resistor (in the fan enclosure) for low-speed mode. Position #3 connects directly to the motor for high-speed operation. When key is at IGN, fan switch is "Hot". Position #1 is OFF. Position #2 connects to the fan resistor (in the fan enclosure) for low-speed mode. Position #3 connects directly to the motor for high-speed operation.
-[http://datsun1200.com/modules/myalbum/photo.php?lid=22236 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/22236.jpg]+[http://datsun1200.com/modules/myalbum/photo.php?lid=22236 USA 1973 wiring]
 +<br><img size=400>http://datsun1200.com/uploads/photos/22236.jpg</img>
PROBLEM: The wiring diagram does not show how the fan Black wire is earthed. PROBLEM: The wiring diagram does not show how the fan Black wire is earthed.
- 
Fan (Heater) Fan (Heater)

Revision as of 18:06, 17 December 2012


The Heater fan is powered by the 15A 'W' fuse in the Fuse Box. The 'W' fuse is for Wiper/Washer/Heater.

Contents

Overview

fuse box heater circuit

Heater Resistor

Location of resistor

Regular Wiring

When IG is on, heater fan motor is always "Hot". But the motor is not grounded until the heater switch is pulled out.

wiring

Fan switch Position No. 1 is OFF
Fan switch Position No. 2 is low-speed via Resistor
Fan switch Position No. 3 is high-speed bypassing Resistor

Heater wire loom with B wire and Y, YR, wires:

(the blue wire is not part of the heater circuit)

fan switch

1972 USA

For 1972 USA models, the heater and switch operated differently. Now the motor fan is directly connected to Ground via B wire, and HOT is switched via a new type switch.

Fan

  • B: ground
  •  ?: High speed
  •  ?: Low speed


Switch

  • LW: 12V from Fuse Box "W" (Wiper/Washer/Heater) via LR wire
  •  ?: High speed
  •  ?: Low speed

Illuminated

Some 1200s have illuminated dashboard controls, like the B210.

1973 USA

The wiring is opposite of other 1200s and also includes to lamps for illumination.

When key is at IGN, fan switch is "Hot". Position #1 is OFF. Position #2 connects to the fan resistor (in the fan enclosure) for low-speed mode. Position #3 connects directly to the motor for high-speed operation.

USA 1973 wiring

PROBLEM: The wiring diagram does not show how the fan Black wire is earthed.

Fan (Heater)

  • B: Ground?
  • n: Low speed
  • n: high speed