a/c relay switch
Senior User
Joined: Apr 2004
Posts: 443
Likes: 1
From: Central Va.
What year?Never seen a relay switch- a relay, yes- a switch,yes.AC fuse is used- clutch cycle switch on accumulator is used( around 82? and up)High pressure switch-94 and up is used, field coil at ac clutch is used. As far as a relay for an aftermarket cooling fan, it will have to be added to your truck( uses a remote 12 volt power source(fused) to power fan using ac clutch input to activate- hope this helps(PS you will get more responses by giving more info about your Bronco)
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Senior User
Joined: Apr 2004
Posts: 119
Likes: 0
From: nj
Originally Posted by Trublufords
What year?Never seen a relay switch- a relay, yes- a switch,yes.AC fuse is used- clutch cycle switch on accumulator is used( around 82? and up)High pressure switch-94 and up is used, field coil at ac clutch is used. As far as a relay for an aftermarket cooling fan, it will have to be added to your truck( uses a remote 12 volt power source(fused) to power fan using ac clutch input to activate- hope this helps(PS you will get more responses by giving more info about your Bronco)
Senior User
Joined: Apr 2004
Posts: 443
Likes: 1
From: Central Va.
There is no relay for AC clutch input(powers up field coil)Got this setup on my 31 Ford Tudor streetrod-temp probe in rad-adjustable controll(temp) switch- fan relay-with ac overide setup(cooling fan HAS to pull air through ac condensor below 30 mph) IF I had room I would have run a fan blade off of water pump-NO wires to run-always pulling air in when engine is running- Less problems. Back to your 89, you need to look at a Ford EVTM(electrical- vacuum trob. shooting man.) to find your wire in question.
