How do turn signals work?

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 The turn signal shares the ground with the park light in the front of the vehicle. If the ground is loose or not connected, it can allow voltage to back feed from the park lights to the turn indicator.
+If you have LED lights on the vehicle, you often will need 1K ohm pull-down resistors on left and right turn to
+bleed off residual voltage. Check with a digital volt meter, look for 3 volts or more still sitting on the turn
+signal wire. Another possibility is if they don’t have a good ground, the PARK and TURN bulb filaments
+are both tied together and go to body ground like a “Y”. If this ground wire is not connected, the park
+light can back-feed to the turn signal circuit. If you use LED lights for your turns/brakes, you
+either need load balancers to draw enough current for the flasher to work or you should use
+a No Load Flasher.
 ==Power feed and flasher unit==
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 The net result usually is a very rapid flash rate. And, in some cases, failure of the flasher unit, or premature failures on subsequent units.
+CORRECT FLASHER CONNECTIONS:
+The flasher normally will have two terminals: X = incoming power L = Load / lights
+No-load flashers will have a 3rd connection for ground.
+If X & L are swapped, the flasher wont operate properly when LED lights are installed but regular bulbs would not be affected and would seem to work normal.
 ==The turn signal switch==

Latest revision as of 11:55, 1 December 2023