Rob Y Posted November 28, 2014 Report Share Posted November 28, 2014 The indicators have stopped working on my 1974 TR6 can you please give me some advice on how to troubleshoot this. The flasher unit looks new - its round not oblong, but of course that doesn't mean it is working. I also dont know if this is important but when I tried the indicators in the garage there was a click on the passenger side behind the dash and then nothing. It hasnt done this again turning the ignition switch on and off. The fuse is ok. Could a blown bulb cause the problem? I'm not an electrician but I know how to use an ammeter and follow basic instructions. Any help would be appreciated. Cheers Rob Quote Link to post Share on other sites
RogerH Posted November 28, 2014 Report Share Posted November 28, 2014 Hi Rob, if it is anything like the 4A flasher then new ones can be awful. Firstly have you got a wiring diagram http://www.advanceautowire.com/tr2506.pdf Check to see that you have power going to the relay. If you have and it is not clicking then it could be duff. if it is duff then consider fitting a square one - ebay do a selection. Roger Quote Link to post Share on other sites
Rob Y Posted November 28, 2014 Author Report Share Posted November 28, 2014 Hi Roger, I've got a wiring diagram and I can see where the connections are. For example I could see that if the fuse had gone some of the gauges wouldn't be working but they are - i've checked the fuses with the ammeter and they are all fine. Should I just buy a new flasher unit - can I get one from a local shop like Halfords? I would love to get it going tomorrow before taking the car out on Sunday. Cheers Rob Quote Link to post Share on other sites
Peter Cobbold Posted November 28, 2014 Report Share Posted November 28, 2014 Try cleaning the earth spade connectors on the rear light housings - a well known trouble spot. Poor earths reduce the current flow through the flasher unit and stop it working on front and rear indicators. Peter Quote Link to post Share on other sites
snowric Posted November 28, 2014 Report Share Posted November 28, 2014 As all the indicators have failed then I would suspect the feed to the flasher unit, flasher unit, I went through two original ones and then fitted the electronic one from MOss with a good loud click. TR Shop would have one too Both an excuse for s good run in the Sun tomorrow and with lots of hand signals. A Quote Link to post Share on other sites
jerrytr5 Posted November 28, 2014 Report Share Posted November 28, 2014 Swap your old bimetal flasher unit for an electronic one. Your local independent car spares shop should have one. You are looking for 3 terminals and you'll need to add an earth wire. See the wiring diagram here. http://www.autosparks.co.uk/product_info.php?products_id=1799 Jerry Quote Link to post Share on other sites
Rob Y Posted November 29, 2014 Author Report Share Posted November 29, 2014 Thanks guys for the advice, a bit of work to do this morning or else its hand signals tomorrow! I will check the earths and look to get a new flasher unit - the electronic one sounds good. Can I test if it is the flasher unit by removing it and connecting the 2 wires? Would the indicators just come on without flashing when I move the indicator switch or would this do some damage? Cheers Rob Quote Link to post Share on other sites
RogerH Posted November 29, 2014 Report Share Posted November 29, 2014 A 74 TR6 uses a two pin flasher unit according to the wiring diagram. Roger Quote Link to post Share on other sites
peejay4A Posted November 29, 2014 Report Share Posted November 29, 2014 Therefore Rob should be able to prove that everything else is OK by shorting the two connectors together and then operating the indicator stalk when the respective lamps on each side should illuminate, ignition on of course. Quote Link to post Share on other sites
Rob Y Posted November 29, 2014 Author Report Share Posted November 29, 2014 Hi Roger, Pete, Yes it is a 2 pin unit. would be good to get confirmation it is ok to connect the 2 wires and test as suggested, just to be sure I am not going to damage something else. Cheers, Rob Quote Link to post Share on other sites
Rob Y Posted November 29, 2014 Author Report Share Posted November 29, 2014 All fixed. Just changed the flasher and now working perfectly. Just to get the job done I replaced with a like for like one - but I will look into the electronic version if this goes again as suggested by Jerry. Warm(ish) arms tomorrow! Cheers Rob Quote Link to post Share on other sites
RobinTR6 Posted November 29, 2014 Report Share Posted November 29, 2014 The good thing about the electronic ones is the flash rate is constant, is doesn't slow down when other things are turned on...and they last. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted December 5, 2014 Report Share Posted December 5, 2014 Does a UK '74 TR6 have hazard flashers? If so there is a second flasher unit fitted to operate them. Do the hazards work? If not suspect a power feed problem after the fuse. The same fuse also makes the fuel gauge and brake lights work. Cheers Peter W Quote Link to post Share on other sites
Rob Y Posted December 6, 2014 Author Report Share Posted December 6, 2014 Hi Peter, It turned out to be just the flasher so a simple fix. My '74 TR6 doesn't have hazard flashers, so no help there with the diagnosis. Cheers Rob Quote Link to post Share on other sites
Yves Ringoir Posted June 23, 2019 Report Share Posted June 23, 2019 Where is the direction indicator relay located?? thanks Quote Link to post Share on other sites
murrayarnold Posted June 24, 2019 Report Share Posted June 24, 2019 I have been in Kuwait for 5 years. Move here and you can totally disregard the need for them in fact I am sure their an optional extra Quote Link to post Share on other sites
Phil douglas Posted November 13, 2021 Report Share Posted November 13, 2021 Where can i get new flasher unit for 73 tr6 ? Live in croydon. Thanks Phil Quote Link to post Share on other sites
astontr6 Posted November 15, 2021 Report Share Posted November 15, 2021 On 11/29/2014 at 12:01 PM, RobinTR6 said: The good thing about the electronic ones is the flash rate is constant, is doesn't slow down when other things are turned on...and they last. The up and down flash rate is caused by the voltage varying. If you fit a 18ACR alternator the problem is cured and the PI pump also does not play a tune in line with the flasher unit. Bruce. Quote Link to post Share on other sites
RobH Posted November 15, 2021 Report Share Posted November 15, 2021 On 11/13/2021 at 7:17 AM, Phil douglas said: Where can i get new flasher unit for 73 tr6 ? Live in croydon. Welcome to the forum Phil. There are plenty of places where you can get parts, depending on whether you want to do it mail order or collect it yourself. Near to you, Moss - Europe are in Feltham, the TR Shop is in Chiswick. (If you join the TR Register you can access the members area, including the trade directory.) The flasher relay is not special to TRs - it is a standard Lucas part used by many classic cars so you may find a local stockist even closer if you do a web search. Yours should be a two-terminal type GFU2124 / GFU2125 I believe. https://www.ebay.co.uk/itm/Lucas-SFB115-12V-47W-Flasher-Unit-Mini-Scimitar-MG-B-Sprite-Midget-GFU2125-/202235825315 Quote Link to post Share on other sites
Phil douglas Posted November 15, 2021 Report Share Posted November 15, 2021 Thanks, do have a fairly local independent autoparts shop nearby Quote Link to post Share on other sites
Rob Y Posted November 15, 2021 Author Report Share Posted November 15, 2021 Funny seeing this post re-appear, seems such a long time ago now. I feel I have learnt so much since then, with the help from this forum. I even fitted a hazard warning flasher (supplied with no instructions) very pleased with myself. I bought my indicator flasher from TRGB I think. Cheers Rob Quote Link to post Share on other sites
Mk2 Chopper Posted November 16, 2021 Report Share Posted November 16, 2021 On 6/23/2019 at 4:56 PM, Yves Ringoir said: Where is the direction indicator relay located?? thanks I just hope Yves Ringoir found it! Gareth Quote Link to post Share on other sites
CP26309 Posted November 22, 2021 Report Share Posted November 22, 2021 My front indicators started flashing the side lights until I cleaned all the push in connectors, they do oxidise after time. Quote Link to post Share on other sites
carrerachas Posted February 25, 2022 Report Share Posted February 25, 2022 Interesting topic. I have a 74. The turn signal indicators will light up (very bright) when I turn the stalk left or right, but the lights will not flash but stay on. I can simulate the TS cycling with the stalk (off on). I pulled the 2 pin TS relay/flasher and tested it connecting it to the battery and it is working/cycling. I then reinstalled it and the lights will again come back on but not flash. The hazard lights come with the switch but are dim and flash slowly. Should I replace the 3 pin hazard relay? I haven't looked at the hazard switch yet. Regards, Charles Quote Link to post Share on other sites
JohnC Posted February 27, 2022 Report Share Posted February 27, 2022 (edited) Are you sure all indicator lights are working? What you describe could be caused by one or more bulbs being blown. Oh, I don't know the impact of having a hazard flasher/switch as I don't have one. The odd behaviour there does make it sound like you have something dodgy in the hazard stuff though. Still, def check that all indicators are working. J Edited February 27, 2022 by JohnC Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.