Rodbr Posted September 21, 2020 Report Share Posted September 21, 2020 Years ago when I was rallying I remember the dash lights for secondary instruments having what was known as a "p" light. These were tiny alloy bodies with bulb inside set on a crescent shaped mount the bulbs could be rotated and provided a down light over the instruments. These were typically used on Helicopter cockpit instruments but 24v, wondering where to get equivilant 12v bulbs these days. These things are very rare I undersatnd and cost sack loads of cash. Anyone recall with more info. Rod Quote Link to post Share on other sites
RobH Posted September 21, 2020 Report Share Posted September 21, 2020 (edited) I think you must mean 'pea' bulbs Rod - so called because they are about the size of peas. They are really LES (lilliput edison screw) and are still readily available, e.g: https://www.ebay.co.uk/itm/10x-12V-60mA-E5-LES-Miniature-Filament-Replacement-Screw-Bulb-Dolls-House-Lights/281763926740?hash=item419a7052d4:g:q4AAAOSwZ2leYoFb The matching bulb holders: https://www.ebay.co.uk/itm/10x-Light-Bulb-Holders-for-E5-LES-Miniature-Screw-Filament-LED-Dolls-House/283675415855?hash=item420c5f552f:g:4skAAOSwzy9dzTjL Is that what you mean or are you after the whole lamp? Edited September 21, 2020 by RobH Quote Link to post Share on other sites
Rodbr Posted September 21, 2020 Author Report Share Posted September 21, 2020 Hi Rob, Those look like what I need. I have a quantity of the housings and mounts. Rod Quote Link to post Share on other sites
Lebro Posted September 21, 2020 Report Share Posted September 21, 2020 Also available in LED form: https://www.classiccarleds.co.uk/collections/12-volt-collection/e5 Bob. Quote Link to post Share on other sites
Rodbr Posted September 22, 2020 Author Report Share Posted September 22, 2020 Thanks Bob Quote Link to post Share on other sites
ianc Posted September 23, 2020 Report Share Posted September 23, 2020 (edited) I recall Graham Robson telling me some 50 years ago that these very small lampholders were used in aircraft, and that they were rarely found - so I should look after them! To direct the light through the slot in one side of the cap, the cap of the holder is rotated (not the bulb) so that its window points as required. The bulb has no screw thread - it slides into the holder and is retained by the cap. In my car, near one of these lamps there's a bulldog clip to hold a small sheet with route directions - excellent at night. I have to admit that more recently I have used my Garmin, but the original system served me well for decades. In the photo, one of these lamps is visible on the circular plate, at 4 o'clock to the bulldog clip and at 8 o'clock from the orange lamp. Ian Cornish Edited September 23, 2020 by ianc Added photo Quote Link to post Share on other sites
RobH Posted September 23, 2020 Report Share Posted September 23, 2020 (edited) Ah - that is this T1 type then with a flanged base? https://www.rapidonline.com/cml-it-t1-3-4-12v-1-2w-lamp-725-41-0282 Edited September 23, 2020 by RobH Quote Link to post Share on other sites
ianc Posted September 23, 2020 Report Share Posted September 23, 2020 Bulb certainly looks like that, Rob, but whether that is the correct size I cannot say without pulling out the bulb and measuring. Might do so tomorrow. Ian Cornish Quote Link to post Share on other sites
RobH Posted September 23, 2020 Report Share Posted September 23, 2020 There is yet another variation Ian, which is the same size but instead of the flange there is a groove. Farnell stock it. http://www.farnell.com/datasheets/1574759.pdf Quote Link to post Share on other sites
Drewmotty Posted September 23, 2020 Report Share Posted September 23, 2020 Would these do the job? https://www.ebay.co.uk/itm/12V-LED-SMD-License-Number-Plate-Light-Screw-Bolt-Bulbs-For-Car-Motorcycle-Set/333729657851?hash=item4db3d673fb:g:AiYAAOSwVJ9fXymt Quote Link to post Share on other sites
TorontoTim Posted September 23, 2020 Report Share Posted September 23, 2020 8 hours ago, Drewmotty said: Would these do the job? https://www.ebay.co.uk/itm/12V-LED-SMD-License-Number-Plate-Light-Screw-Bolt-Bulbs-For-Car-Motorcycle-Set/333729657851?hash=item4db3d673fb:g:AiYAAOSwVJ9fXymt Assuming that they don't throw the light too widely and distract the driver, yes. I have a couple of these - the only problem is that the threaded portion is a bit short if you want them to light a clock who's face is not flush with the dash. I extended mine with some regular house-type lighting fittings. https://www.ebay.co.uk/itm/Universal-Motorcycle-or-Car-White-12V-LED-License-Plate-Light-Bolt-Chrome/254187489026?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D225076%26meid%3D376456d56fc54a80959d5186bc45b004%26pid%3D100623%26rk%3D2%26rkt%3D5%26sd%3D333729657851%26itm%3D254187489026%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganic&_trksid=p2047675.c100623.m-1 Quote Link to post Share on other sites
Rodbr Posted September 24, 2020 Author Report Share Posted September 24, 2020 I had not realised that a simple post that I thought would be difficult to get an answer would create such knowledge and variances. The forum wins again!!! My dash is quite simple only Halda Speedpilot, stopwatches, butler map light, map and pencil clips and additional light and horn switches. No electronic gismos thank god. I have a quantity of the original type ad spare bulb holders and the friction positioning is a bit iffy but if good enough for aircraft instruments then so be it. Rgds Rod. Quote Link to post Share on other sites
Rodbr Posted September 24, 2020 Author Report Share Posted September 24, 2020 I have two or three Avanti flexible map lights if anyone needs one, too modern for my car!!!!! Rod Quote Link to post Share on other sites
PhilipB Posted September 24, 2020 Report Share Posted September 24, 2020 Rod These are similar https://www.belmog.com/index.php?route=product/product&path=106_129&product_id=240 Phil Quote Link to post Share on other sites
ianc Posted September 27, 2020 Report Share Posted September 27, 2020 Had a look today at the very small lamp on my dash - it's so long since last I removed its top that it has become stuck! It's still working and I will have to try loosening it sometime. However, in the boot I found a stock of some 8 spare bulbs in a pack labelled SCH 725 12V/0.1A. It appears that SCH may no longer exist, but there's a photo of the bulb on silicon-ark.co.uk/725-12V-100mA (out of stock!) and ellison-electronics.com lists it (without photo) and states 11 in stock. Ian Cornish Quote Link to post Share on other sites
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