minimuts out driving in the new 1275LS beast tonight and the lights went out (almost predictable).
Fuses OK - even changed them.
Any thoughts on the source of the problem?

I have had a number of the Headlight / parker switches fail and without warning.

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Check if the parkers still work, then see if you have an output on the blue wire to the dip switch then see if there is power coming out of the dip switch from the blue/red when on low beam and Blue/ white on high beam. If there is nothing coming out of the rocker switch you can carefully pull it apart and clean the contacts. But if after doing so the fault is cleared I would suggest fitting headlight relays to take the main headlight load away from the switches. And you will end up with better lights too.

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DID I MENTION THAT I AM THE BEST SUPPLIER FOR MINI ELECTRICAL PARTS AND REPAIRS?
"Let us remove your "SHORTS"

No tail lights or interior lights.
Engine still starts & have indicator lights.

Will get minimuts to work checking where the power is/isnt.
Cheers

Check your Main power Fuse.

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DID I MENTION THAT I AM THE BEST SUPPLIER FOR MINI ELECTRICAL PARTS AND REPAIRS?
"Let us remove your "SHORTS"

That was the first thing we did.

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MINE:
1976 Clubby 1100, 266 Kent cam, slightly worked head. (awaiting paint)
1978 1275LS Hi-Ho Silver with a Camtech 619 cam and some strange looking rockers

My 1275LS was doing the same thing until recently. Check the 15 amp inline fuse on the middle of the firewall.

Also, the problem has disappeared since the relays were installed and as Tony says, the lights are now heaps better. No need for H4's.

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Cheers
Alec
1275LS - July 78 - XNFAD18Y/102918

interior light, brake lights and indicators work. no parkers or speedo surrounding light tho.

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MINE:
1976 Clubby 1100, 266 Kent cam, slightly worked head. (awaiting paint)
1978 1275LS Hi-Ho Silver with a Camtech 619 cam and some strange looking rockers

Those are the exact same symptoms mine had.

Fuse.
Relays.
Circuit board on cluster.

No more problems.

_________________
Cheers
Alec
1275LS - July 78 - XNFAD18Y/102918

pulled light switch and cleaned up contacts - no change.
no in-line fuse (there is on the project clubman, but not the LS)
it has relays.

figuring minimuts might visit the auto-elecs tomorrow
(electricals not my thing)