nickh7 Posted February 23, 2016 Share Posted February 23, 2016 The old indicator units in the headlamps needed replacing so I fitted some new LED units and then the trouble started.They will only work if I connect another another conventional bulb holder in with them . Do I need to add more resistance ? If Yes how do I do it ?These are LED flashershttp://www.carbuildersolutions.com/uk/micro-28mm-led-side-repeaters-clear-lens-amber-light-pair Link to comment Share on other sites More sharing options...
Roadsport06 Posted February 23, 2016 Share Posted February 23, 2016 What do you mean by not working? If double speed flashing then you need a different flasher relay for LEDs. If you have nothing from it then try reversing the wires. Link to comment Share on other sites More sharing options...
Roadsport06 Posted February 23, 2016 Share Posted February 23, 2016 What do you mean by not working? If double speed flashing then you need a different flasher relay for LEDs. If you have nothing from it then try reversing the wires. Link to comment Share on other sites More sharing options...
nickh7 Posted February 23, 2016 Author Share Posted February 23, 2016 I've tried 3 different flashers ! They work on hazard all be it a bit faster but won't work on the indicator unless I add the second bulb holder then they are fine . Link to comment Share on other sites More sharing options...
SM25T Posted February 23, 2016 Share Posted February 23, 2016 Three different flashers ..... but are any of them electronic type .... to suit led bulbs ? I got one dirt cheap on line. Had to reverse the cables to it on the fuse rail though. Easy enough. Link to comment Share on other sites More sharing options...
nickh7 Posted February 23, 2016 Author Share Posted February 23, 2016 I've had LED's on for some time , rear clusters are LED's and the fronts too the headlamp bowls were the last pair to change Link to comment Share on other sites More sharing options...
SM25T Posted February 23, 2016 Share Posted February 23, 2016 Very odd. Assume you have earthed the new units in the headlamps ? Link to comment Share on other sites More sharing options...
nickh7 Posted February 23, 2016 Author Share Posted February 23, 2016 Yep , they only work if they have another light wired up too which makes me think its resistance Link to comment Share on other sites More sharing options...
SM25T Posted February 24, 2016 Share Posted February 24, 2016 I would ask CBS as they supplied the lamps. Maybe it needs a resistor wired in. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 24, 2016 Member Share Posted February 24, 2016 That might be the cause.Fortunately there is a relay available that seems to work with all types of bulbs. Swapping to that is probably the easiest solution. Let us now if you can't find it in the archives,Jonathan Link to comment Share on other sites More sharing options...
Tony Whitley Posted February 24, 2016 Share Posted February 24, 2016 I spotted a typo by Jonathan. My life is complete I'll copy it here for posterity: Let us now if you can't find it in the archives, Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 24, 2016 Member Share Posted February 24, 2016 Tony::-)Private Mail sent!Jonathan Link to comment Share on other sites More sharing options...
Roger Ford Posted February 24, 2016 Share Posted February 24, 2016 Adding a resistor is the wrong solution (it'll work, but why waste the energy heating up a resistor?) Using a flasher relay specifically designed for LEDs is the right solution. You need one with the correct pinout - take your existing one out and check the numbers on the back, then compare against various options on ebay. If you get the wrong one, you can swap the leads around as SM25T did, but better to get the right one in the first place. Link to comment Share on other sites More sharing options...
Tony Whitley Posted February 24, 2016 Share Posted February 24, 2016 To answer the question, I'm no expert but I'm sure they do need a series resistor. Similarly if the charge light is replaced with a LED or the alternator doesn't work. Link to comment Share on other sites More sharing options...
Roger Ford Posted February 24, 2016 Share Posted February 24, 2016 To answer the question, I'm no expert but I'm sure they do need a series resistor.No they don't. If you're going to use a resistor, it needs to be in parallel with the indicators, not in series. The old-fashioned flasher relays need to see a certain current flowing before they'll work properly. A resistor in series will reduce the current flowing. Putting one in parallel allows a larger current to flow through the resistor as well as the low current flowing through the LEDs. You could also just wire up an extra bulb hidden under the dash somewhere. Bit of a kludge? So is the resistor.LED charge lights are totally different, but they probably need to have the resistor in parallel as well. Link to comment Share on other sites More sharing options...
nickh7 Posted February 24, 2016 Author Share Posted February 24, 2016 thank you for the update , looking on e bay there are plenty but non quote the numbers I could see on the back of the one i got from Redline . I'll keep looking Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 24, 2016 Member Share Posted February 24, 2016 Mavic82's magic flasher unit.Jonathan Link to comment Share on other sites More sharing options...
nickh7 Posted February 24, 2016 Author Share Posted February 24, 2016 I spoke with Car Building Solutions and got the correct one , so I've now spent a bl dy fortune just to change the headlamp glass . They do look a whole lot brighter and as the old ones were starting to get dull spots on the reflectors I am sure it will now pass its MOT Link to comment Share on other sites More sharing options...
raw Posted February 24, 2016 Share Posted February 24, 2016 Relay I used is Wipac WFL7LED, avaialble on eBay from various Landrover sellers, think mine came from mm4x4 but sure a search will reveal others. Worked perfectly on a mixture of LED and filament lamps. cheersAndrew Link to comment Share on other sites More sharing options...
nickh7 Posted February 29, 2016 Author Share Posted February 29, 2016 yep fitted an LED flasher , at least they flashed at a steady rate but still wouldn't work on the indictor unless the old holder was in line. When to Maplin took their advice and tried various resistor combinations still to no avail ! Car builder solutions are baffled as to why this might be the case as the flasher should have sorted it. at least the headlights are bright Link to comment Share on other sites More sharing options...
Area Representative Bizzielizzie13 Posted February 29, 2016 Area Representative Share Posted February 29, 2016 This may be of no help, but my brother in law has a BJ trailer and saw a strange dim light in one of the lockers. It was a box of incandescent bulbs in the circuit to the LED rear lights!!! Link to comment Share on other sites More sharing options...
nickh7 Posted March 1, 2016 Author Share Posted March 1, 2016 Looks like they had the same issue Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 1, 2016 Member Share Posted March 1, 2016 I'd ask the supplier for another one.Jonathan Link to comment Share on other sites More sharing options...
raw Posted March 5, 2016 Share Posted March 5, 2016 The WIPAC relay I quoted has been fitted to 4 different Sevens, two of which have a mixture of LED and filament lamps, all of which work perfectly. My guess is that not all relays are as competent or there is another issue on the car somewhere else.Just a thought, the warning light on the dashboard - is it LED or filament type? Link to comment Share on other sites More sharing options...
Roger Ford Posted March 5, 2016 Share Posted March 5, 2016 Generally a mixture of LED and incandescent works fine. It's when you've got LED only that it gets challenging. However since the Wipac one you quote has LED in it's part number, it should be suitable. Link to comment Share on other sites More sharing options...
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