I'm having trouble with the turn signals on my F100. Brake lights work and the turn signal switch appropriately turns off the correct stop light. Yes, it's not a Tbird but it is the same design. Per a post that Simplyconnected made some time ago, the 1157 light bulb is rated at about 24 W, so with one light bulb, it would draw about 2 amps, and therefore you could model the light bulb as a 4.6 ohm resister. When the turn signal is activated, by moving the lever left or right, it is flowing current through 3 light bulbs in parallel. The front parking light, the rear turn /stop light, and the light bulb in the instrument panel which is a 57. If I run three 4.6 ohm resister equivalents in parallel, I get 1.5 ohms. Therefore you would expect it to draw about 7.8A when it is flashing. The circuit protection is with a 14A fuse, so it will only blow with a dead short.
How much voltage drop would you expect to see across the flasher and how much current does it typically require to have it open? I believe my problem is the flasher feed (blue wire) from the flasher.
How much voltage drop would you expect to see across the flasher and how much current does it typically require to have it open? I believe my problem is the flasher feed (blue wire) from the flasher.
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