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Joined: 26 Apr 2016
Posts: 102

1994 Porsche 993 Carrera 2

PostPosted: Mon Mar 05, 2018 6:36 pm    Post subject: Reply with quote

highway wrote:
The only garage this might be an issue is an opc or specialist. Mainstream MOT are big business. They have neither time nor interest to worry about dismantling headlight assemblies to confirm compliance. Never going to be a real world issue.

My T-light hid equipped 993 sailed through the MOT today.
As other posters have said, you'd have to be an inquisitive expert to discover the HIDs where not original.
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Joined: 10 Nov 2008
Posts: 10

PostPosted: Mon Mar 05, 2018 7:09 pm    Post subject: Reply with quote

Thanks - my 993 with HIDs has likewise passed all its MOTs ok since 2010 .... the issue is new Dft guidelines wef 18 May 2018 (they are available online) state clearly that aftermarket fitted HID lights will be failed.

FYI Section 4.1.4 on page 7 states:

Some vehicles may be fitted with High Intensity Discharge (HID) headlamps. It is not permitted to convert existing halogen headlamp units for use with HID bulbs. If it is clear that such a conversion has been carried out, rather than replacing the entire unit with one designed and approved for use with HID bulbs, the headlamp should be rejected.
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Joined: 20 Mar 2007
Posts: 495
Location: Cambs

PostPosted: Tue Mar 06, 2018 1:38 pm    Post subject: Reply with quote

I'm not sure my MOT station would even ask the question, given the scant attention they pay to headlight alignment.

For the first couple of years I owned this car one of the headlights was obviously misaligned because I had a great view of the road when the headlights were dipped but people coming the other way kept flashing me because they thought I had the headlights on beam.

I eventually set about trying to adjust them, but moved them too far in the other direction to such an extent that we couldn't drive the car at night because the headlights were pointing straight down at the ground.

The car has probably passed five MOT's during this period, with the headlights completely misaligned, so I have no idea what checks they are doing, but there is obviously quite a margin for error. On that basis I'm reckoning that checking the internals is probably way beyond them.
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Joined: 23 Nov 2015
Posts: 28
Location: Birmingham

PostPosted: Fri Mar 09, 2018 2:37 pm    Post subject: Reply with quote

For what it’s worth my old man is an MOT tester; says there is next to no chance testers will be investigating the nature of the lights, presence of a ballast, etc.

Once checked for aim they are pretty much done.
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