Lotus Elan

connection fan !

PostPost by: geni » Thu Dec 12, 2019 9:47 am

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
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PostPost by: types26/36 » Thu Dec 12, 2019 5:20 pm

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
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PostPost by: 69S4 » Thu Dec 12, 2019 5:31 pm

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.
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PostPost by: Rob_LaMoreaux » Fri Dec 13, 2019 1:14 am

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.

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PostPost by: pharriso » Fri Dec 13, 2019 12:52 pm

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 35 times


I think this meets all the OP's requirements.

The additional relay is attached to the narrow radiator side plate.
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PostPost by: geni » Sat Dec 14, 2019 8:48 am

merci de votre partage ,mais je désire 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
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PostPost by: pharriso » Sat Dec 14, 2019 10:43 pm

geni wrote:merci de votre partage ,mais je désire 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.
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PostPost by: geni » Sun Dec 15, 2019 8:10 am

yes indeed I change the subject, because I want to deepen my knowledge (am in the darkness of Lucas) Thank you for sharing
 

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