Toyota is tricky with the way it wires a thermo fan - the thinking is that
if something blows in the fan circuit or the switch is disconnected then the
fan will start up and never turn off until the wiring fault is corrected.
You can actually do this using a Bosch relay, just use the 87A pin but you
need the Toy type switch as well.
Terry
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Andrew
Greenbury
Sent: Friday, 11 May 2001 10:36
To: [EMAIL PROTECTED]
Subject: Re: Pulsar thermo switch.
damien
i reckon terry would have answered your question regarding the
wiring....
the pulsar thermoswitch is normally open and when you get to the
desired temp the switch closes, allowing continuity between the
two wires.
toyota thermoswitches work opposite though ie are normally
closed, and go open circuit when the desired temp is reached.
so as long as you know you've got a pulsar one terry's wiring is
suitable, otherwise needs a simple mod. if in doubt the switch
operation is easily verified with a multimeter and some hot water.
andrew
> daters of OZ,
>
> I put a thermo fan in my car last week, and today got a thermastat housing
> with a temp switch (from pulsar). It is not the 3-bolt type like on a
> bluebird. I accidently found it on my brothers 180B, don't know how it got
> there. Anyway, there are two wires coming out, and I assume that a
positive
> power supply goes in one wire, and when water reachs desired temp, it
allows
> the power to flow through to other wire, which then flows to my
> relay,switching it on. Is thier another option, for example, the earth
goes
> into the wire??
>
> Any feedback appreciated
>
> thanxs
>
> Damien.
> _________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
>
--membersozdat-------------------------------------------------------
OZDAT Mailing List Please Note:-
Send (un)subscribe requests to [EMAIL PROTECTED]
Send submissions to [EMAIL PROTECTED]
No unauthorised redistribution of this email
http://www.ozdat.com/ozdatonline/index.htm
http://www.ozdat.com/ozdatonline/listindex.html
http://www.mail-archive.com/[email protected]/
---------------------------------------------------------------------
