I'm less worried about the MFK (Motorfarhrzeugkontrolle) since;
- Is it even a legal requirement that a car has high beams? It's not like they are really needed is it?
- The Bi-Xenons are so bright on full-beam, the standard 55W high beam at the moment is hardly noticeable.
I walked in front of the car with the high-beams on after i changed over the flaps http://www.jaguarforum.co.uk/f32/x350-permanent-import-uk-hungary-headlamps-41306.html#post439737
and i had grey spots in my vision for a couple of hours afterwards. If the inspector even notices the 100W bulbs in the inner lights, then hats off to him!
Fry the wiring? Yes that's a concern, or at least blowing fuses...now going by the numbers;
12V 55W bulbs would pull 4.58A at 12V.
But in reality it's more like 13.8-14.4V, so that would be 3.82-3.98A with the 55W.
100W bulbs at 13.8-14.4V would pull 6.95-7.24A.
The fuse for both left & right main beams lights together is 20A (F16, under the bonnet)
Even at 12V, both bulbs together would only pull 16.6A, at another 0.5 for the resistance of the wiring (worst case) and it's still under the 20A.
So why is there a 20A fuse in place, when the standard 55W bulbs together would only pull a max of 8A?
Might be for the inrush current when the bulbs first turn on....?
As you can tell, I know just enough about electricity & electronics to be dangerous....
The CANBUS measures the resistance of each light circuit, & if it's too low then it thinks the bulb has blown & you get the message.
But what happens if the resistance is too high? It won't be a problem while the bulbs are cold (regardless of wattage, they all pretty much have a 0.5Ω resistance when cold) but when they warm up, will it realise there is too much resistance or current & give me an error message?
And the wiring...if a wire can take 4A, it can take 8A, for short periods, again it's not like high beams are on all the time...
In any case, i'm not running the lights until the test, just in case the superglue melts...