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Eddie was right!

We're in the closing stages of refurbishing our barn find 8v Kat,

some minor issues remain to sort out. One was the lights.

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This car had working headlights and winkers, but no side or rear lights, and no sidelight warning light on the dash. I tested all the terminals, and there was no life.

I decided the fault lay in the steering column switch, so I removed the steering wheel and shroud to inspect the switch. My test light confirmed that the side light part of the switch wasn't working, so I rang Eddie at AECar.

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Eddie told me there was a difference between the Swiss 8v Kat switch and the ordinary 16v switch. He wasn't sure what it was, there is a Kat switch with a different part no. listed, but he didn't have one in stock anyway.

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So I ordered a 16v switch, how different could it be?

Something to think about!

A dirty kneefull of switches

Well, not much different, but just different enough to cause some careful thought.

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The lights connection from the Kat switch has a 3 pin plug, the 16v has a 2 pin item. The Kat has a blue and black live wire input, a green output wire for the headlights, and a green and black wire which seems to be for the sidelights. The 16v looks to make do with

1 gay blue and pink wire for both lights, leaving the green/black wire redundant.

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I wonder what Swiss regulation required this alteration?

I tested all the functions, and everything worked the same with one wire as with the kat's two wires.

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I decided to keep the original 3way plug connecting to the car. The blue/black input wire uses the same big spade clip terminal, so I cut the remaining green and green/black wires and joined the headlamp feed to the only wire coming out of the new switch. This left the old green/black wire unused, so I made this safe with insulating tape, but kept the wire long in case of future problems.

I tested all the switch functions at every stage, and it kept working correctly. I assembled the steering column and cowl, and fitted the wheel, everything worked well, all the indicator lights work on the dash too.

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That was a good result, I'm glad Eddie warned that there was an issue, so I was prepared for some thinking!

This is the new 16v switch with the Kat

live feed fitted, and the only lights wire is connected to the old 3 pin plug. The spare green wire now goes to the flasher switch.

The winker and wiper plugs were almost the same, just a little trimming of plastic needed

for the multiplugs to fit.

Main lights plug now ready to connect to the car.

This is the new switch fitted, 2 wires

into the 3 way plug, with the green/black wire now spare.

This is the only wire left over, the live feed from the new switch, I destroyed its 2 way plug to see what worked.

The dash lights now all work, the hi beam light didn't work before, a previous owner had 'rewired' new hi beam lights in. 

 

I notice the reserve fuel warning is even more pessimistic

than usual! Heaven knows why!

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