What May Have Gone Wrong
Some corner and side marker lamps which flash with the turn signal are not wired parallel to the main turn signal bulb. A single filament bulb is wired with one terminal to the main parking lamp hot terminal and the other terminal to main turn signal lamp hot terminal. This wiring scheme permits a single filament bulb to light steadily for a marker light, but to also flash with the turn signal. In effect, the marker lamp does not have a direct ground but instead grounds through either of two filaments of the main dual-filament parking lamp/turnsignal bulb. The marker bulb is powered by the turn signal hot wire and grounds through the main parking lamp filament when the parking lights are off and turn signal is on, thus lighting the marker bulb in unison with the main turnsignal. When the parking lights are on, the marker bulb is powered throgh the main parking lamp hot wire and grounds through the main turn signal filament when the turn signal is off. When the parking lamps are on and the turn signal lights, the marker bulb loses its ground and goes out, thus alternately lighting the marker bulb and the main turn signal bulb. If this scheme (or something similar) is the way your car is wired, the marker lamp or corner lamp is not a good circuit to use. Even if you decided not to use a direct ground but instead paralled the washer lights with the corner lights I still don't think they will work the way you intend them to work if your washer lights are LED's. That is because with the circuit described above the marker lamp's polarity is REVERSED when the parking lamps are on. LED's will not work with reversed polarity unless specifically engineered to do so (and few are). This may explain the "smoke". Also, you may have inadvertently shorted the turn signal and parking light circuits together while hooking up the washer lights. If you want your washer lights to function the same as your corner lights (both as parking light and turn signal) then it may require additional components such as diodes to do so. It would be simpler to settle for either the parking light or the turn signal and wire the washer ligthts to the MAIN turnsginal or parking light bulb lead, not the marker or corner light. Hopefully, your car wiring only suffered a blown fuse but here's a tip for futrure reference. These little washer and auxilary lights draw far less than one amp. Always use a fuseholder and a 1/4 amp or smaller fuse in series with whatever wire you are tapping on the car harness. That will protect both the car wiring and your lights against shorts and reverse polarity. Another point: some people tap in to the main harness, run a wire, and then put a fuse just before the auxilary lights. I like to use a weather-resistant fuse holder as near to the tap point on the main harness as possible. That provides good insurance regardless of what might go wrong with my "added" wiring along the way. Good luck and let us know how you mak out on getting your lights working!
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