On 16/01/2020 11:50, NY wrote:
"Jim GM4DHJ ..." wrote in message
...
couldn't be bothered checking feedback 'till after the event...got a
reply this morning don't think they know anything about cars......"Hi,
sorry to hear that. How strange, I've not come across this before.
Have you tried putting them in the other way round please?
Kind regards
Sam"...........must be a wummin' .....the connector to the bulb only
goes on one way and the bulb only fits the headlight unit one way
.......yes in a reflector type headlight unit the dual filament bulb
like the H13 it is the position of the filament that gives the high
low beam so I was getting low beam when the high beam warning light is
on and vice versa ... .....anyway just put the original Philips bulbs
back in and all is fine....got another set coming from china so we
will see if they are OK.....only bought them as spares so thank god I
checked them out .....the filaments look the same in both sets of
bulbs and are positioned the same way so I can only assume the wiring
from the pins to the filaments is around the wrong
way....unbelievable......not that you ever believe anything I say ....

I'm surprised the supplier didn't try to sell you a plug-in "converter"
between the connector and the bulb, to correct the incorrect
pin-to-filament wiring in the bulb ;-)


How much tolerance is there in bulb position in a typical headlight, and
how much would it affect beam position? Many modern cars have very
little clearance between the rear of the reflector and engine mountings
etc, so fitting a bulb and securing it with the spring clip on the
housing is something that can only be done by feel rather than sight.
I've often wondered whether the bulb is properly seated, since I can't
*see* whether it is, and whether any mis-seating (eg if one of the
location tabs on the bulb is not flush with the housing) will affect
beam alighnment.

I suppose the wiring error could have been worse: if they'd swapped the
common pin with another, you might have ended up with one dipped or beam
setting where the two filaments were in series and you got a very dim
light ;-)

H13 is just pop it in and turn 90deg no spring clip....looking at the
sellers neg feedback for the rubbish leds he sells I'm just glad I
didn't have a fire and a melted headlight unit....