[CL9] Question about interior LED lighting

[safetycar]

Be surprised if any draw more watts than the bulb they'd be replacing. Voltage is 12V, so if the original bulb is 25W, you can go up to 2A for the LED. If the bulbs were to draw too many amps, it shouldn't flicker, the fuse should just blow. Which is another way to look at it. If for instance the interior lighting fuse was 30A, then as long as all the bulbs combined are less than that, then you should be fine. Not that they'd all be powered at once.

Given the higher efficiency of LEDs I'd be more worried about it being way too bright if you were to draw close to the original wattage. Like imagine if you replaced a 50W 12V MR16 halogen downlight with a 50W LED? Would be ridiculous.

[johnyy]

Try this one and let me know what you think.

http://www.ebay.com.au/itm/2x-White-...gAAOSwHnFV6sYU

Thanks! But I'm still wondering why that one is more expensive than the others I've seen on eBay. Better quality perhaps?

[Martin77]

Thanks! But I'm still wondering why that one is more expensive than the others I've seen on eBay. Better quality perhaps?

There are three types of led, the dome led (most common in 5mm), surface mount LEDs and high powered LEDs commonly found in torches. The dome light above uses 3 cree LEDs with better electronics hence the extra cost. Instead of trialing cheaper ones (which I have done), it is best to go straight to quality unit, it's cheaper that way.

[Martin77]

Be surprised if any draw more watts than the bulb they'd be replacing. Voltage is 12V, so if the original bulb is 25W, you can go up to 2A for the LED. If the bulbs were to draw too many amps, it shouldn't flicker, the fuse should just blow. Which is another way to look at it. If for instance the interior lighting fuse was 30A, then as long as all the bulbs combined are less than that, then you should be fine. Not that they'd all be powered at once.

Given the higher efficiency of LEDs I'd be more worried about it being way too bright if you were to draw close to the original wattage. Like imagine if you replaced a 50W 12V MR16 halogen downlight with a 50W LED? Would be ridiculous.

The rule of thumb is that you would replace standard halogen with led a quarter its power (5W halogen = 1.25W led). This is true power (Voltage x Current) and not the power written on the spec.