Help with led type bulb holder

[saaby93]

Anyone know where you can get bulb holders for this type of bulb?




ta

[steveo3002]

http://www.ebay.co.uk/itm/T10-W5W-194-168-Light-In...

possibly a t10 , need to check the size of the bulb to be sure.

[saaby93]

Looks bigger than that - I think its about the size of a standard bayonet 21W tail stop indicator bulb
Listing here
http://www.ebay.co.uk/itm/1pcs-3157-60-SMD-LED-Tur...

Does 3157 or switchback mean anything?

Where the lighting regs used to specify 6W or 21W, how does that convert into LED brightness?
Do they still take 8W or 21W but much brighter?

[steveo3002]

they wont use as much power as the normal bulb...honestly anyones guess if its brighter , so are awesome some are rubbish

[saaby93]

Thanks - it helps to run it past someone else
3157 socket was the clue
Do these normally require a control box resistor or can they replace a normal 21W bulb?

[steveo3002]

often need resistors on anything modern

is there a owners club /forum for your car , possibly someone else tried them