[Solved] Resistors for aftermarket LED bulbs - needed or not really?
Just made an upgrade: replaced almost all incandescent bulbs in my elderly Mercedes with LED versions.
Love the way they shine. Ordered relatively expensive "CanBus" LEDs, which were supposed to fool my vehicle´s bulbs control circuitry into thinking that I still have incandescent bulbs and not generating any "bulb burnt out" errors.
Unfortunately, this "CanBus" feature did not truly help: my turn signals are now blinking with (approximately) double their original frequency.
I know that adding additional resistors in parallel to the bulbs will definitely help. To be on the safe side with my upgrade project, I even ordered those resistors along with the bulbs. But now that it came to actually installing those resistors, I started having some thoughts in regard to whether or not those resistors are truly needed:
The resistors have their downsides - a bunch of them:
1) price (which I already paid, but nevertheless);
2) interference with original wiring, which decreases reliability;
3) adding extra components, which also means decreasing reliability;
4) those resistors can get truly hot, = additional risk of melting smth or even causing a fire;
5) LED bulbs consume less electricity, giving some (although small) relief to the battery and alternator. The resistors will be wasting the whole electricity saved by the LEDs on generating unneeded heat...
And the only positive thing about those resistors is that after their installation the turn signals blinking frequency will return to normal.
So my question is: is it worth it? Or should I just keep driving around blinking with my turn signals with increased frequency? Will anyone really care? Actually, such increased frequency
a) may be good for safety, since arguably it will attract more attention to my maneuvering vehicle;
b) technically cannot be that wrong or dangerous to anyone else on the road in any way, cause it is standard blinking frequency for vehicles with not all bulbs operational - it is just that in my vehicle they all are.
So what do you think: shall I install those resistors, or shall I just continue driving with "frequency-upgraded" turn blinkers? 😉
Thanks in advance to anyone who takes his time to express his motivated opinion.
This is what happens when you mess with circuitry that was never designed for LED. If it were me, I would change it all back to incandescent so it works the way it's supposed to.
It's your money.