Lotus Elan

Headlamp solenoid location

PostPost by: Bigbaldybloke » Thu Feb 22, 2018 1:55 pm

Hi, I?m doing a slight mod to add a solenoid to operate the headlights rather than have the piping back to the dashboard switch. I plan to retain my non failsafe operation. My question is, where should the solenoid be located. Is it in the same place for both non failsafe and failsafe systems. I?m just completing the wiring under the bonnet and this is one of the last items to do. I was thinking of going to MX5 motors and even bought a pair, but have decided to stay more original. The solenoid has three ports, one to the front cross member, one to the headlight pods and one for venting, what have people put on the venting port to stop muck and spiders getting in there?
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PostPost by: 1owner69Elan » Thu Feb 22, 2018 2:38 pm

I purchased a screened vent plug to keep the solenoid vent from sucking in foreign material:

https://www.lowbrowcustoms.com/breather ... 8-npt.html

img_8604.jpg and


img_8605.jpg and
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PostPost by: Robbie693 » Fri Feb 23, 2018 12:26 am

As far as the solenoid location is concerned, the failsafe cars had it on the nearside wing just in front of the air deflector plate. I didn't know the non-failsafe ones had a solenoid, I assumed the valve/light/dashboard switch did the solenoid duties...

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PostPost by: prezoom » Fri Feb 23, 2018 2:27 am

The solenoid on my 72 Plus2 was located on the front side of the mounting plate for the radiator on the left side. Just below and opposite of the upper radiator water inlet. I used the wire that powers the solenoid to operate the relay for my Miata headlight motor.
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PostPost by: pharriso » Fri Feb 23, 2018 12:28 pm

Here you go:

plus2_130_5_headlightvacuumsolenoid.jpg and
+2 130/5 Headlight solenoid installed in position
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PostPost by: Bigbaldybloke » Sat Feb 24, 2018 11:28 am

Thanks all, valve installed and breather vent filter ordered. That?s another item almost closed on my to do list!
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