Join Date: Feb 2010
Location: Thompson Falls, Montana
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Well, I hate to break it to you, but that is wrong. A resistor will do nothing to fill in the gaps from the pulse width modulation that feeds our lights. Basically the power to the headlights is switched off and on rapidly (why... I do not know.) it does this all the time, not just when "checking" the bulb.
With a heated filament the "off"cycle is not sufficiently long enough to allow the filament to cool down, and it remains hot and bright. LEDs do not rely on heat to emit light, so when the pulse is in the "off" cycle the LEDs go out completely, causing visible flicker. The resistor does absolutely nothing to solve that problem, all it does is add a load that the CANBUS "sees" during the "on" cycle, fooling into thinking a 1 watt LED is really a 35watt incandecent bulb.
Wheras, capacitor will store a small amount of electricity, feeding it back into the circuit during the "off" phase of the cycle, keeping the LEDs lit. Without it, just as the OP has stated, you'll have flicker.
'76 CJ-7, '43 CJ-2a, '78 Bronco,'78 CJ-7, '75 CJ-5, '78 CJ-7, '80 CJ-7, '78 SJ, '79 SJ, '78 and a '76 FJ-40 , '90 XJ, '91 XJ, '86 CJ-7, '95 ZJ, '68 CJ-101 Commando, '00 TJ, '68 M-715, 2 '86 Military Blazers, '96 LR Discovery, '86 CJ-7, '91 YJ, '99 TJ, 07' JKU Rubi, 1988 YJ, 1973 Commando, 3 Diesel Excursions....
Now back to a 2013 JKU Rubicon with "stuff", planning 37's with minimal lift.
I've tried them all... Jeeps are still the best. (0||||0)