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240Z Blue Wires Behind Heater Control Panel - 1970 240Z


coopdog240

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I believe if you trace them back, one will lead to the fan switch and is a power lead provision for the air conditioner. The other may be a provision for an electric fuel pump.

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This may, or may not, be related to those blue wires, but thought I would add it to the conversation. The dealer added FrigiKing air conditioning

incorporated a micro-switch that may have utilized one of these wires. The mirco-switch was mounted at the intake duct actuator located behind

the blower motor in the passenger side footwell area behind the dash. When the top slide lever on the heater control panel was moved from the

center "vent" position to the left "off" position, the intake duct door moved to close off fresh air intake and open to allow the air from the evaporator

to pass through the blower assembly for cabin distribution. Also, with the movement of this vent lever to the off position, a circuit was completed

via this micro-switch throught the dealer added A/C ON-OFF/ RHEOSTAT switch to allow electrical actuation of the A/C compressor. This on-off switch

was mounted to the bottom of the dash below the hazzard switch. The micro-switch assembly on my car is incorporated in a red plastic housing

mounted next to the cable actuator for the intake duct behind the blower motor.

I mention this for informational purposes only to help expand this discussion. This is just my personal understanding of this switches function, as I do not have

the original installation instructions provided for dealer installation.

Dan

Edited by AZ-240z
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