Aldpilot Posted August 3, 2017 Report Share Posted August 3, 2017 Following my alternator overcharging and running with the lights on (for once bright), my offside unit has failed. Both Rimmer and Moss are on back order, so does anybody have one they are prepared to sell? Alternatively, can anyone recommend the merits of a halogen upgrade (they are in stock)? Mike Quote Link to post Share on other sites
Kevo_6 Posted August 3, 2017 Report Share Posted August 3, 2017 Hi Mike, hope you are all well. I have the halogen upgrade, wipac I think and they are so much better than the sealed beams with plenty of variation on bulbs. These seem a good deal, not used them yet but was going to get some 5 3/4s for my Lancia. http://www.bowerspartsonline.co.uk/lighting/front-lighting/classic-front-lighting/7-inch-headlights All the very best. Quote Link to post Share on other sites
Steves_TR6 Posted August 3, 2017 Report Share Posted August 3, 2017 Cibie iode headlamps with uprated halogen 'nightbreaker' bulbs seem to be the recommended route, mine are so much brighter than the 1990's conversion h4 headlamps that were on the car. Add relays to suppply the power not via the ignition/light switches. Steve Quote Link to post Share on other sites
Aldpilot Posted August 3, 2017 Author Report Share Posted August 3, 2017 Thanks Kevin. Do I have to worry about the antiquated wiring when changing to halogen? We are gradually updating things as much of the 5 was sticking plaster underneath. Solid sticking plaster though. Quote Link to post Share on other sites
peejay4A Posted August 3, 2017 Report Share Posted August 3, 2017 The wiring itself will be fine. You could look at the condition of the bullet connectors and clean them up. Quote Link to post Share on other sites
Aldpilot Posted August 3, 2017 Author Report Share Posted August 3, 2017 Thanks Pete. I now just need to understand "relays" Mike Quote Link to post Share on other sites
RobH Posted August 3, 2017 Report Share Posted August 3, 2017 Mike, relays are remotely-operated electrical switches. You use the existing switches and wiring to power the relay, which only requires a low current, but the high current for the lamps is taken instead by the relay contacts and new wiring, thus saving the original circuits from wear and overload. The new wiring can be thicker and hence lower resistance, which means less voltage drop along the wire and brighter lights. Quote Link to post Share on other sites
Fireman049 Posted August 3, 2017 Report Share Posted August 3, 2017 (edited) Hi Mike ~ Here is a wiring diagram for a relay. The relay needs to have a heavy duty live supply to it. Relays can be purchased quite cheaply from such places as Vehicle Wiring Products. (0115 930 5454). Tom. Edited August 3, 2017 by Fireman049 Quote Link to post Share on other sites
rogerguzzi Posted August 3, 2017 Report Share Posted August 3, 2017 Hello Mike I fitted a pair of these to my Triumph Spitfire I already had night breaker lamps fitted and relays.(just wait until they have a 33% or 50% sale) which is often The difference is noticeable in the beam pattern much less stay light. Somewhere I have a photo showing the pattern on a white sheet with one fitted to compare if I can find it I will post it My old units were Cibie and in good condition http://www.eurocarparts.com/ecp/c/London+Taxis+Int_FX+4_2.5_1987/p/car-parts/lighting1/car-electrics-and-car-lighting/headlight/?471930011&1&7cc519ae233aea6816e8c4977de0414c45bfeeff&000176 Roger Quote Link to post Share on other sites
Kevo_6 Posted August 3, 2017 Report Share Posted August 3, 2017 Thanks Kevin. Do I have to worry about the antiquated wiring when changing to halogen? We are gradually updating things as much of the 5 was sticking plaster underneath. Solid sticking plaster though. Hi Mike, yes I should of mentioned the relays but everyone above have answered the question superbly. I've replied to your PM. Quote Link to post Share on other sites
peejay4A Posted August 3, 2017 Report Share Posted August 3, 2017 (edited) The existing wiring gauge is fine (subject to the condition of the joints as above). The addition of relays eases the load on the lighting switch which is a good thing. Edited August 3, 2017 by peejay4A Quote Link to post Share on other sites
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