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connection fan !

PostPosted: Thu Dec 12, 2019 9:47 am
by geni
for my S4 Sprint I want to know the wiring diagram and these wire colors, of the fan on the main radiator via relay; I can not find!
I also want to add to the dashboard, indicator light with forcing switch
who can describe it

Re: connection fan !

PostPosted: Thu Dec 12, 2019 5:20 pm
by types26/36
I dont recall ever seeing a fan wiring diagram in the Two Seater Lotus Manual (although it may be there :?: )
I believe the plus two wiring diagram contains a fan circuit allthough I dont know if its through a relay.
Anyway I hope this thread and its links may help you.
viewtopic.php?t=38732&p=267809

Re: connection fan !

PostPosted: Thu Dec 12, 2019 5:31 pm
by 69S4
I?m pretty sure the basic fan circuit is on the S4 wiring diagram but as I?m away from home at the moment I can?t check it. If you want a manual override that?ll be a diy addition but it?s not a difficult bit of wiring.

Re: connection fan !

PostPosted: Fri Dec 13, 2019 1:14 am
by Rob_LaMoreaux
I just checked since the workshop manual diagram doesn't have it.
The drown with blue strip accessory power goes into the thermostatic switch and comes out on a Green with black stripe wire. The green with black strip goes into the fan motor and comes out to a black ground wire.

If you want to add a manual switch just put it in parallel with the thermostatic one. If you want a light tee it off the green with black wire.

Rob

Re: connection fan !

PostPosted: Fri Dec 13, 2019 12:52 pm
by pharriso
I also could not find anything for the S4 & Sprint, these were the wiring diagrams that I found for the +2 & Europa:

Note in all cases full fan current goes through the temp switch which can (& does) burn it out.

This is the wiring that I implemented:
RadiatorCoolingFan_Wiring_V1.00.pdf
(50.04 KiB) Downloaded 144 times


I think this meets all the OP's requirements.

The additional relay is attached to the narrow radiator side plate.

Re: connection fan !

PostPosted: Sat Dec 14, 2019 8:48 am
by geni
merci de votre partage ,mais je d?sire connaitre en explicite les fonctions de chaque relais pour la Sprint
thank you for sharing, but I would like to know specifically the functions of each relay for the Sprint

Re: connection fan !

PostPosted: Sat Dec 14, 2019 10:43 pm
by pharriso
geni wrote:merci de votre partage ,mais je d?sire connaitre en explicite les fonctions de chaque relais pour la Sprint
thank you for sharing, but I would like to know specifically the functions of each relay for the Sprint


Are you totally changing the subject & asking what do the relays under the hood in a Sprint do? If so, they are headlight relays, see attached.
Federal_Failsafe_Headlamp_Wiring_Schematic_V1.12.pdf
(77.74 KiB) Downloaded 104 times

Re: connection fan !

PostPosted: Sun Dec 15, 2019 8:10 am
by geni
yes indeed I change the subject, because I want to deepen my knowledge (am in the darkness of Lucas) Thank you for sharing
?

I use Google Traduc to understand you