Re: Volkswagen Brake Light Switch

Posted by HH56 On 2023/1/24 16:50:22
Definitely no cracks and I even bought a new block screw thinking there was some damage to the switch port threads. Finally used non hardening Permatex to seal mine.

The inclusion of thread tape is interesting and must be a fairly recent change -- at least in the last year or two. Can you tell if it is the regular teflon tape or something else? Most switches I have seen are just bare threads. Even more interesting is the Napa photos of their SL134 show the tape used on the Echlin version but not on the lower cost MPE version. The usual places that deal with brake components say not to use teflon tape but Napa must approve of whatever they used. Since that should offer a better chance at a good seal, perhaps it should be specified in the xref to only use the Echlin switch.

When I was playing with the 56 some of the line components -- inline fittings and valves in particular -- had a red and fairly hard sealing compound painted on the threads.

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