I've developed a fix/upgrade for this problem with broken plastic fingers on 996/997 Porsches. I've done this for a number of clients in the US. However, a client in the UK with this problem on his '88 928 looked at my posted pictures of the switch innards and thought they looked similar. He said that new switches were no longer available.

Turns out he was right. I upgraded his switch with the same parts I use on 911s.

If your 928 suffers from this problem, send me a PM to discuss.

Garage De Loods has a kit they sell

I'd love to see what that repair kit looks like. And what country they're located in.

They are out of the Netherlands

https://928-944parts.com/en/products...2d6dc4a3&_ss=r

Their kit would not fix broken fingers on the stalk base. That is the common reason the switches fail.

I agree - can you post pictures of your solution? 928s used several iterations of the combo switch over time - I believe the modular winged spring parts are likely the same for all - however the stalk lengths varied, as did the configuration of tertiary & quaternary stalks

Alan

I used the de Ludes kit to fix my broken turn signal and was disappointed with the results.

The most common root cause seems to be btoken plastic fingers, not the small black plastic lever that actuates the canceling.

My upgrade replaces both broken or cracked fingers, that locate the double-S spring, with ones fabricated from spring steel. These are securely mechanically attached to the base of the stalk.

Turns out that the different stalk lengths of different Porsche models does not change the design of the stalk base, where I do the upgrade.
So far, my upgrade applies to 911-996 & 997, Boxsters and now 928.

I will try to post some relevant images ...

Nice job - that is a good way to solve the brittle plastic cracking problem. I believe Porsche's original design should have always just had metal sprung wings - their design in plastic was always going to be subject to breakage.

Alan