wiring up thermo fan spdt relay

ok no problem :), Also in your diagram....I want to add in a manual switch inside the cabin of the car. What would I need to do? thanks michael

its working fine now :D thanks alot for that! would you know the above question though? thanks

I will post a picture tonight.  It requires (2) 1N4001 diodes available at Radio Shack.  Attach both diodes to the point that now says 12V Ignition, with the banded end of the diode nearest the relays.  Non Banded end of one goes to 12V ignition.  Non Banded end of the other diode goes to your switch.  Other terminal of the switch goes to Acc wire or to the battery.  Place a 3 amp fuse at the point of connection.   If you run it to Acc, it will only come on with key in acc position.  If you run it to the battery, it can come on anytime the switch is turned on.

hey guys, Im back! I recently just purchased a new thermo switch which turns the fan on a slightly lower temp. Its the same connection on the switch except its a Normally Open Ground instead. Im thinking all I have to do to my current wiring is put the Positive wiring from the Fan to 87 instead of 87a. Is this correct. thanks in advance.

No worries, I have changed it over to 87 and drove the car to around the 91 degree mark and the fan did not come on....I have the same wiring as before but I never connected the switch up as I didnt think it was nessesory. Any tips? and also with this setup could i run it like this?

if you are sure you have 12 volts on the ignition wire and on 30, there is a problem with the temp sensor. or the relay.Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

no worries i will have a look... can I run the relay with the above diagram or will it cause any issues? cheers

evo180sx wrote: no worries i will have a look... can I run the relay with the above diagram or will it cause any issues? cheers

also the Temp sensor is brand new...and the relays were working yesterday...if there was a problem with the relays it wouldnt be able to work with the old diagram?