
Re: Libra led driving/spotlights
I've just put projectors on my Spyder so I thought I'd add my experience to this thread rather than starting my own. I've put a summary on the FB group already but as that is transient and non-searchable I think the forum is a better technical reference for anyone else so the full write up is here.
My 5 3/4 units were giving very poor light. I'd checked the voltage and earth continuity and both were fine so couldn't understand why they were so pants but night driving was borderline dangerous, even when I took the covers off (which did improve things a bit). I've been considering an upgrade for a few years and have been following other's adventures into LED with interest. The technology and the regulations seemed to be in a state of flux (luminous flux?) but has settled now I think. Clearly putting LED bulbs in the existing reflector units is now clarified as a non starter. I looked at various LED 5 3/4 units but they were either very expensive or had very mixed reviews. Most new car seem to come with projectors these days and LED projectors are becoming quite common. The LED projector upgrade path seems to be becoming well developed and as the dip beam pattern/cut off is achieved using a shutter it seems you get a much more defined dip pattern. I had heard that HIDs or LEDs need self levelling and washing devices but checking the MOT manual it only says that vehicles equipped with HID or LED
may have self levelling and washing devices and if they do have them then they must work.
So, I chose to go with LED projectors. I thought about going with small projectors in a GTO style cluster/pod as seen on several later Spyders (and Libras with Spyder front clams) but I couldn't get hold of the pods and decided my grp skills aren't up to making them. So the decision was made to go with 3" Bi-LED projectors to give both dip and main in a single unit and to use shrouds that bring the units up to a similar overall size to the 5 3/4" units.
These are the projectors I bought:
https://www.ebay.co.uk/itm/302983310276 At the time they were on at £79.99 but there was a discount code that brought them down to £64 so seemed worth a punt.
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These are the shrouds I went with:
https://www.ebay.co.uk/itm/393312583300 which seemed quite reasonable at £9
As Bi-LEDs use a single LED light source that stays on for both dip and main and the dip is separately controlled with a solenoid operated shutter you can't simply connect the H4 connector as in the H4 the dip filament goes out and a separate main filament comes on. I bought these relay harness connectors to solve this:
https://www.ebay.co.uk/itm/302648552572 Only £4.99 for the pair.
Removing the old units wasn't as easy as I hoped as some of the screws that hold on the little grp top hats that cove the back of the bulbs had rusted/rounded so needed cutting and some of the adjuster nuts for the morrette mountings had seized solid so turned the captive bolts in the plastic so these had to be cut off too. Once off the old units simply come out forwards leaving a hole like this:
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For the projector lenses to be in the right location the rear part of the the light source/heat sink/fan has to go back through the hole so the hole needs a bit of fettling like this:
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That pic also shows the four small mounting holes for the bolts I used on the baseplates of the projectors. I fixed 4 M4x30 set screws to the metal plate with nyloc nuts to make the screws captive. I put springs over the screws then passed the screws through the holes in the GRP with washers and nylocs compressing the springs to give around a 10mm stand off. Turning these nuts allows precise beam adjustment.
Here is a projector fitted with the shroud in place:
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Comparison of projector (offside) and original reflector (nearside):
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Here is a comparison of the beams shone onto my garage door. The left side halogen beam is barely visible in the daylight (and aimed too low but was passing MOTs). The right side LED shows a bright well defined beam with a clear cut off:
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I then had to find a way to protect the rear as the old top hat was too small to go over the back of the projector unit. My solution was to cut the leg off an old wetsuit and stretch that over the pod recess then insert a small stainless steel balti dish (handles removed) into the open end. The balti dish is easy to pop out to get to the adjustment nuts but seals it all in nicely and still sufficient clearance to the wheel when the clam is down.
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wetsuit and balti dish.jpg [ 325.93 KiB | Viewed 408 times ]
I went to my local club's pub meet last night and the lights are absolutely superb. I've got the aim a little low as the cut off can be seen on the road ahead but the raised section on the left lights up the verge for a long way. I think I'll leave them low as they are very bright and I don't want to dazzle and they project forward enough to see where I'm going. The mains light up the road like daylight. Very pleased! Just hope the MOT tester likes them but I can't see anything in the wording of the MOT manual that says they can't pass.