Re: Light Bulb Designation, Vendors that Sell

Posted by HH56 On 2024/4/13 18:39:54

My comments about how the extra rear bulb is needed are strictly referring to how the factory chose to do the original turn signal option. You specified the "proper switch" and I agree. If you want to get an aftermarket turn signal setup absolutely the same bulb can be used and many people made add on turn signal switches starting in the 40s and still do. Some of them even had a mechanical cancelling function like yours using the roller against the wheel to operate a mechanism inside the enclosure similar to the factory original setup but most did not. A couple of units made today look a bit like the older switches but both then and now all the aftermarket setups needed different wiring than stock. To use the same bulb requires modifications to the original circuit to be made and there doesn't seem to be a standard circuit with the same colors working for all. Once the aftermarket setups are installed, unless their wiring diagrams are still available to see what was done trying to use the original factory wiring diagrams in tracing a problem will be of little use.