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Difference between W3W & W5W bulb?

Difference between W3W & W5W bulb?

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Discussion

A lex

Original Poster:

16,097 posts

145 months

Thursday 9th December 2010
quotequote all
As title,

Does anyone know the difference between the two types?

The car needs W3W side lights according to the manual - I have lots of W5W bulbs sitting around. Are they compatible? Google doesnt really help and image search suggests they look the same.

Insights welcome!

E30M3SE

8,164 posts

108 months

Thursday 9th December 2010
quotequote all
3w v's 5w.

BrianMillar

192 posts

117 months

Thursday 9th December 2010
quotequote all
As far as I can tell they are both physically the same size.

One is a 3 watt W3W. The other is a 5 watt W5W

W3W is possibly a common American size. What kind of car is it for?

Beaten to it

Edited by BrianMillar on Thursday 9th December 14:59

A lex

Original Poster:

16,097 posts

145 months

Thursday 9th December 2010
quotequote all
Gotcha cheers.

'Wedge 5 watt' makes sense I guess smile

Its for a Jeep, so the American angle is correct.

One more stupid question.... consequence of using a 5w, when it should be a 3w?

HellDiver

5,708 posts

94 months

Thursday 9th December 2010
quotequote all
A lex said:
One more stupid question.... consequence of using a 5w, when it should be a 3w?
Your bulb will be 2W brighter than it should be. None, basically. biggrin

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Stonebridge

54 posts

76 months

Thursday 9th December 2010
quotequote all
A lex said:
Gotcha cheers.

'Wedge 5 watt' makes sense I guess smile

Its for a Jeep, so the American angle is correct.

One more stupid question.... consequence of using a 5w, when it should be a 3w?
It will draw more current.
Current drawn = power divided by voltage
On a 12V system the 3W draws 1/4 amp. The 5W draws 5/12 amp

A lex

Original Poster:

16,097 posts

145 months

Thursday 9th December 2010
quotequote all
HellDiver said:
A lex said:
One more stupid question.... consequence of using a 5w, when it should be a 3w?
Your bulb will be 2W brighter than it should be. None, basically. biggrin
Jolly good - saves me spending € on the heap smile

Thanks