How to check directional switch

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Yesterday | 04:19 PM

FlashJack

Thread Starter

Intermediate

Joined: Aug 2025

Posts: 28

Likes: 11

From: Germany, Bielefeld

How to check directional switch

Hi to All,

I removed the steering coloumn from my 73 to replace the key warning switch.
I had to tear it apart to gain access to the switch.
replacement itself worked fine.

Before installing it back into the car, I would like to check all functions by using an ohm meter to check them at the harmonic connector.

For example:
which contacs have continuty when turning the turn signal lever to right and to left . What to check if the hazarf button is pulled, etc.
The only thing I was able le to check is the keywarning switch. It works fine.

I habe schematics but don't know what contacts are switched by Signal lever and hazard switch.

Thanks in advance!
Flashjack

Last edited by FlashJack; Yesterday at 04:21 PM. Reason: Typing mistake

Yesterday | 05:39 PM

Peterbuilt

Le Mans Master

Joined: Aug 2006

Posts: 7,417

Likes: 1,553

From: mount holly NC

2025 c3 ('74-'82) of the Year Finalist - Unmodified

2019 C3 of Year Finalist (appearance mods)

Here's the wires and colors at the harmonica connection.

Today | 03:05 AM

FlashJack

Thread Starter

Intermediate

Joined: Aug 2025

Posts: 28

Likes: 11

From: Germany, Bielefeld

Pete, thanks a lot.

Now I was able to figure out how to check the switches:

Could not test finally horn button, because coloumn is removed from car. But "G" has continuity to the horn contacts.

Best regards
Flashjack

Useful to check connections using Ohmmeter

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