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Manual wiring for electric cooling fan 700 1989

posted by  raidman on  Sat Jun 21 00:09 CST 2003
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last visit: Fri Apr 4 22:17 CST 2014
[RELATED]

Hello All:
Just had my 89 740 converted from R12 (super chilly) to R134 ( anemic cooling) but what can an environmentalist do???
I plan to wire up the electric cooling fan to the antenna switch (no power antenna in my car) and a Bosch relay to run power to the cooling fan. This way I can turn it on during traffic stops, low city speeds, idling at lights, etc. AND I can turn it off at highway speeds.
The following numbers are on the Bosch 12V, 20/30A Relay:
30
85
86
87
87a
Can anyone tell me what goes to what?
I think the fan has it's own power wire (red/white) and it's own ground (solid black) right now.
BTW, the fan does not have power going to it now ( wiring problem??)
GIA,
el Raidman






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