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S Type headlights convert to HID???


LairdScooby
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Hi All,

a bit (as in very) disappointed with the dipped beam performance of my S Type headlights, i've cleaned/polished the lenses (used T-Cut as they weren't that badly opaque) and fitted new bulbs which improved them a lot, finally giving me a beam pattern.

However, the amount of light they actually put on the road is minimal. I'm seriously considering upgrading to the HID lights fitted to later S Types, looking at the diagrams they appear to use different feed points from the fusebox and also use a relay to power the ballast, with the relay coil switched by what would be the dipped beam line from the Front Electronic Module.

Has anyone done this conversion? If so, any pointers please? Alternatively, has anyone found any decent LED H7 bulbs that will fit into the existing space at the back of the headlight unit? Quite happy to (temporarily) refit the halogen H7 for MoT purposes as long as the LED bulbs give me the light i want/need on the road after dark.

TIA,

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Hey Dave,

I'm in the process of recommissioning my S-Type (yay! 🥳) and have just had my electrics diagnosed and repaired which I thought was a good start! Like you, I have the earlier X200 and I am / was disappointed in the dipped beam performance. On one of her last night time trips back from Brighton on the A27, it was excruciating being dazzled by 4x4s and anyone running LED lights it seemed. With the full beam on, not so bad, but on dipped beam approaching traffic, not a good thing at all!

In the arms race that modern car headlights seemed to be, I felt I was very much on the losing end! I asked my autoelectrician (a very capable guy) what he thought of LED conversion and he wasn't keen, suggesting Osram Nightbreakers, which incidentally, I was already using! 😆! The Nightbreakers are only 55W, so I wondered if more powerful versions are available? Or if 100W bulbs from another manufacturer could be an option?

I follow this post with interest and hope there is a viable solution out there, ideally one that doesn't involve wholesale replacement of the complete headlamp units from a later car, or something equally drastic (and expensive!) 🤞

 

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I'm glad it's not just my imagination Russ although not happy Jaguar seem to have scored an own-goal with the standard headlamps on the S Type. I was expecting much better, the last Jag i had before the S was an XJ40 about 25 years ago, it was the Sovereign with the rectangular headlights and very good they were too.

For the past 15 years i've had a 1994 Rover Sterling and that has good lights with halogen bulbs in, however i upgraded those to LED bulbs, took me a long time and several sets of cheaper ones (no doubt the reason your autoelectrician was reluctant, it can be an expensive hobby finding the right LED headlight bulbs!) to discover the secret to getting good LED headlamp bulbs. Usually my "go to" source of LED bulbs has most headlamp bulbs but i couldn't find any listed last time i checked. However while looking for something else the other day, i had a quick look and found :

https://www.classiccarleds.co.uk/products/led-headlight-conversion-bulbs-h7-4600-lumen-philips-z-es-main-dipped-glb477?_pos=1&_psq=h7&_ss=e&_v=1.0

These use the same arrangement of LEDs as those in my Rover (and also my "Dogmobile", a 1988 Volvo 760) so the beam pattern remains as it should be without glare in the "anti-scatter area" of the beam pattern where there should be no light emitted. In finding these i may have stumbled upon the answer to my query, the MoT is due soon and while i could get away with it on the Volvo and Rover having the LED bulbs in for the MoT, i'm not sure i'd get away with it on the Jag.

Likely to be early March before i get a set to try, will be a "snug" fit as well!

I'll update here as and when, i know what a nasty road the A27 back from Shoreham to Southampton can be, having done that route many times in the past. These days i'm further up the country and besides all the 4x4s, round my local area i have many USA spec cars with the original lights in that are still set up for left hand drive so their dipped beam is dazzling, even worse if they've fitted some el-cheapo Chinese LEDs or HID bulbs 😲

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You are 100% right Dave, my auto electrician said that LED was (generally) a waste due to cheap LED quality making LED conversions potentially worse lighting than the standard set up. So if you have knowledge of better quality bulbs, and will try them in the S-Type, all good!

I await how you get on with interest, or if I get to it before you I may give these LEDs a go! Or try some 100W H7s as an interim measure.

Thanks for raising (and potentially solving 😆!) the issue, most interesting!  👍😀

 

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2 hours ago, Russ68 said:

You are 100% right Dave, my auto electrician said that LED was (generally) a waste due to cheap LED quality making LED conversions potentially worse lighting than the standard set up. So if you have knowledge of better quality bulbs, and will try them in the S-Type, all good!

I await how you get on with interest, or if I get to it before you I may give these LEDs a go! Or try some 100W H7s as an interim measure.

Thanks for raising (and potentially solving 😆!) the issue, most interesting!  👍😀

 

I'd avoid the 100W halogen bulbs Russ, two reasons, first is the Front Electronic Module is probably not designed to run them as they will take nearly double the current of the standard 60W H7 bulbs and secondly, the heat produced by them will be much higher - the reflectors and lenses are both plastic so at best would be likely to warp/deform and/or discolour, at worst possibly melt.

If you feel like trying the LEDs i linked to, i do know they offer a money back guarantee if they don't work as you hoped. Seems you may beat me to trying them out! Just to give you an idea and comparison, here's a couple of pics from a few years ago - the car on the left has eBay Xenon look halogens, middle (mine) has LEDs and the one on the right has Nightbreakers.

IMG-20160507-221238.jpg

IMG-20160507-221332.jpg

All three cars are similar models, all alignments checked and all headlamps good condition with clean glass lenses so it makes a good comparison.

If the H7 LEDs are as good as those (those above in the comparison pics are H4s) then should be a good improvement - i currently have eBay Xenon look bulbs in my S Type so once i've got past the MoT i'll order a pair and then maybe a pair of HB3 LEDs for the inner full beams.

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Noted re the 100W bulbs, I pulled a set of these out of a TD5 Disco I have that were working fine, so wonder if this was something you could do, but the design is quite different with a glass reflector not plastic, so I won't risk using something similar in the jag based on your advice.

Unfortunately your links didn't really work, so I can't see the pics you refer to. I'd go to the webpage, grab the whole url and embed using the link feature  which is accessed using the little chainlink icon 4th along from the left etc. Or just paste the whole link in without the brackets and additions etc:

https://www.jaguarownersclub.com/forums/topic/25348-s-type-headlights-convert-to-hid/#comment-83490

 

 

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21 hours ago, LairdScooby said:

Hi All,

a bit (as in very) disappointed with the dipped beam performance of my S Type headlights, i've cleaned/polished the lenses (used T-Cut as they weren't that badly opaque) and fitted new bulbs which improved them a lot, finally giving me a beam pattern.

However, the amount of light they actually put on the road is minimal. I'm seriously considering upgrading to the HID lights fitted to later S Types, looking at the diagrams they appear to use different feed points from the fusebox and also use a relay to power the ballast, with the relay coil switched by what would be the dipped beam line from the Front Electronic Module.

Has anyone done this conversion? If so, any pointers please? Alternatively, has anyone found any decent LED H7 bulbs that will fit into the existing space at the back of the headlight unit? Quite happy to (temporarily) refit the halogen H7 for MoT purposes as long as the LED bulbs give me the light i want/need on the road after dark.

TIA,

I , some while ago, submitted a posting (sticky) on this forum in respect of the legality of upgrading to HID lights from Halogen. In a nutshell , if the original fitting is halogen they are not legally upgradeable to HID and can therefore be failed on MOT.

Regards, John

Not for me to say you should not do it, that is obviously your choice.

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You did indeed John, thanks - i have read it. I'm hoping to exploit the loophole that the car will be tested with halogen glow-worms in (that's how they seem in the Jag headlights!) and then swap to LEDs afterwards.

However, the law as far as HID states that the housing should have been designed for HID light sources (or words similar) and my plan was to use the ater HID headlamps from a 2002 on car.

However, the wiring is so different on the HID that i don't want to be messing about that way. Not that it's beyond my skill-set, i just want something easily reversable. I can't use the excuse the lenses and housings were first used in the same model during or before 1986 as i can with the other two.

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