Lotus Elan

Light Unit bulb holder repairs: the solution

PostPost by: TonyA » Wed Jan 17, 2024 2:33 pm

Since buying my Plus 2 a couple of years ago, I have experienced various electrical gremlins , including bulb holder wiring. What's common to all the external bulb holders is they comprise a spring, a mica insulating disc and a contact 'mushroom' attaching to the wire ( two in the case of the rear tail/brake light holder. What goes wrong: the wire breaks from the contact, the insulating disc breaks and the spring corrodes or 'pings' away.

The solution: buy bulb holders for Ba9s (front side lights, number plate lights), Ba15s (indicators) and Ba15d ( tail/ brake), easily found and about £3-4 a pair on ebay then carefully open up and remove the component parts to use as needed in the Lotus bulb holder. You may need to trim off the tiny ears on the insulating disc to get the even round shape needed for the Lotus bulb holders.

One final suggestion: reinforce the crimped join between wire and mushroom contact with solder and then adhesive heat shrink.

Tony
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PostPost by: TonyA » Wed Jan 17, 2024 3:16 pm

The photo showing bulb holder parts I failed to upload correctly in my previous post.. Tony
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20240117_135736.jpg and
Bulb holder parts
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PostPost by: Johnny America » Tue Jan 23, 2024 11:59 am

TonyA
Very useful 'Hack' and a nice upgrade job for the winter months. I agree solder and heat shrink as apposed a connector.

Although I don't care to remember how many times I have forgotten to slip on the heat shrink before making a joint :roll:
1969 Lotus Elan +2 4 speed - Barn find and currently undergoing recommissioning.
1979 Lancia V6 Group B Rally Car
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