Club Cobra

Club Cobra (http://www.clubcobra.com/forums/)
-   Originality Forum (http://www.clubcobra.com/forums/originality-forum/)
-   -   Lucas 3 position headlight toggle switch (http://www.clubcobra.com/forums/originality-forum/142138-lucas-3-position-headlight-toggle-switch.html)

picah 03-17-2019 09:01 PM
Lucas 3 position headlight toggle switch
 
I am close to finishing the dash and main harness wiring and have a question. I am using the standard 3 position Lucas toggle switch for the headlights (off-dimmers-headlights) with floor mounted dip switch (high/low beams). I'm using two Bosch relays for the headlights.
Question: should the power into the switch come from the ignition switch (12V switched power) or from the starter solenoid post (hot all the time HATT)? Is the only difference the ability to have my lights on with the ignition off or is there a better choice from a safety perspective. Remember, I am using relays so there is very little power (amperage) going through the toggle switch.
Thanks for your input here. The wiring doesn't have me freaked out, but I have been needing to ask various questions to help me achieve good functionality as well as good measure of safety.
Best
Ron

Gaz64 03-17-2019 09:46 PM
It should be battery fed, that way any light function can be operated without the ignition on.

Would you want the lights going off at night, if you shut the engine down for some reason?

Gary

LMH 03-17-2019 10:39 PM
The parking lights would need to be able to be on w/o the engine or ignition switch being on.
Larry

patrickt 03-18-2019 08:21 AM
Quote:
Originally Posted by picah (Post 1459441)
Question: should the power into the switch come from the ignition switch (12V switched power) or from the starter solenoid post (hot all the time HATT)? Is the only difference the ability to have my lights on with the ignition off or is there a better choice from a safety perspective.
The traditional feed to the Lucas switch is from the "always hot" post on the ignition switch -- and a zillion cars used this same wiring pattern in the 50's, 60's, and 70's. The danger in this set up is that the Lucas re-pop switches can only handle 15 amps, maybe, if you're lucky, and you will also experience significant voltage drop through the crappy Lucas re-pops. Go here for a discussion and easy upgrade, both for performance and safety: http://www.clubcobra.com/forums/era-...g-upgrade.html


All times are GMT -7. The time now is 11:01 PM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: