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LEDs
LEDs
If you have to put in load resistors to stop OBC warnings is that defeating the object of fitting for less power consumption and only leaves the reason as cosmetic. How much difference in consumption is there between a 12v 21w bulb and an LED with 50w 6ohm resistor (seems to be the normal resistor thats sold)?
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OnlineX5Sport
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Re: LEDs
50W is the maximum power that the resistor can cope with before melting. One reason that size is used is that it can be chosen for a whole range of different LEDs and is an easy size (physically) to work with. That makes it easier for a supplier as they can order them in bucket loads. The actual power going through it will depend upon the rating of each LED in the replacement lamp itself.
Larger resistors also don't get as hot....another complication that has to be included in the designs.
Technically you only need a resistor rated for each complete LED lamp unit plus about 20%, but that can result in components that need soldering in and are harder to use by the average 'modder'.
Power (W) = Supply Voltage (12V) X Current drawn (in Amps)
Larger resistors also don't get as hot....another complication that has to be included in the designs.
Technically you only need a resistor rated for each complete LED lamp unit plus about 20%, but that can result in components that need soldering in and are harder to use by the average 'modder'.
Power (W) = Supply Voltage (12V) X Current drawn (in Amps)
Last edited by X5Sport on Sat Oct 29, 2016 7:34 pm, edited 1 time in total.
Never anthropomorphise computers. They hate that.Re: LEDs
Most purchased LED,s that you can buy are Canbus friendly, the resistance only needs to be enough to simulate an unlit bulb, as the car checks all bulbs to make sure there is a resistance equivalent to a normal unlit bulb.
Most fit LED bulbs for the looks over energy efficiency.
Most fit LED bulbs for the looks over energy efficiency.
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BMW E83 X3. 3.0d M Sport, 2008 in black ( now gone )
BMW E93 330i Convertible Msport 2007. ( Now sold )
VW Golf 2.0 TDI 140 GT 2010 ( now sold )
Now Sold 55 plate, X5, 3.0 D Sport. Silv
Re: LEDs
I just got some canbus friendly indicator and reverse LEDs. The indicators flash way to fast and the reverse bring on an OBC warning. As you said Horizon, I want to keep them cos they look nicer so will just get the pack of 4 resistors they're only £6
As ever X5Sport thanks for filling in one of the many empty boxes in my head.
As ever X5Sport thanks for filling in one of the many empty boxes in my head.
E53 X5 4.6is, Carbon Black, LPG, Paddle Shift, Dynavin N6, Lowered, 22"Wheels, Side Bars. Perfusion Exhaust
E30 M3 Black, S50B32 Engine, 6 Speed Box, Ireland Engineering ARBs & Big Brake Conversion, Lowered, 18"LMs, CF CAI, CF Splitter & Barge Board, ZM3 Quad Exhaust.
VW R32 Gone
E30 M3 Black, S50B32 Engine, 6 Speed Box, Ireland Engineering ARBs & Big Brake Conversion, Lowered, 18"LMs, CF CAI, CF Splitter & Barge Board, ZM3 Quad Exhaust.
VW R32 Gone