I'm toying with changing rear light bulbs on my car from Incandescent to LEDs.
I know the turn signal mechanism relies on resistance to turn bulb on and off.
What people are selling to add resistance to the circuit are 25w and 50w
wirewound resistors in pretty aluminum casings, resistance is between 6 and 8 ohms.
I measured resistance of existing bulbs, which, *cold* measure around 2-3 ohms.
Have no idea what resistance might be once heated up in circuit, but willing to guess at 6-8 ohms
I'd think the draw of these small incandescent bulbs can't be anywhere near 25w, let alone 50w.
-then again I've been wrong before-
Are the guys selling this stuff ( at anywhere from $10 to $50+ per pair ! ) selling overbuilt expensive junk
to credulous know-nothings?, or would you really need ability to handle 50w draw? Maybe I'd better tap
into circuit and see what the draw is, or better, there *have* to be tables that show what a 921 or 7443 bulb draws.
Thanks in advance for your thoughts.
I know the turn signal mechanism relies on resistance to turn bulb on and off.
What people are selling to add resistance to the circuit are 25w and 50w
wirewound resistors in pretty aluminum casings, resistance is between 6 and 8 ohms.
I measured resistance of existing bulbs, which, *cold* measure around 2-3 ohms.
Have no idea what resistance might be once heated up in circuit, but willing to guess at 6-8 ohms
I'd think the draw of these small incandescent bulbs can't be anywhere near 25w, let alone 50w.
-then again I've been wrong before-
Are the guys selling this stuff ( at anywhere from $10 to $50+ per pair ! ) selling overbuilt expensive junk
to credulous know-nothings?, or would you really need ability to handle 50w draw? Maybe I'd better tap
into circuit and see what the draw is, or better, there *have* to be tables that show what a 921 or 7443 bulb draws.
Thanks in advance for your thoughts.