phil Dean Posted January 10 Report Share Posted January 10 Hi All. Please see below does anybody have the original version of this article I am struggling to read it especially the wiring diagrams. Thanks Phil. Quote Link to post Share on other sites
trchris Posted January 10 Report Share Posted January 10 Hi Phil Looks interesting can’t help with article but I’m sure one of the electronic experts will be able to Chris Quote Link to post Share on other sites
RobH Posted January 10 Report Share Posted January 10 (edited) It was looks as though it was scanned at low resolution - unless that is your copy-and-paste Phil. Where did you find the original ? TRA month and year? The latching relay is a Durite item (0-728-02) but I seem to recall they changed the power connections at some point but didn't change the type number, and if you wire up a new one using the circuit diagram for an old one, it damages the relay. I think the old ones didn't care about polarity but the new ones MUST have +12 on 30 and 0V on S which is the opposite way to how it is shown in this circuit. Edited January 10 by RobH Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Hi Rob. It was a cut and paste had it for ages cant remember were it came from some were of the forum might try googling it and see if I can find it. Phil. Quote Link to post Share on other sites
RobH Posted January 10 Report Share Posted January 10 OK I will re-draw the circuit when I have a few moments Phil - it is pretty straightforward. The only thing to note is the rating of the diode which has to cope with the full main-beam current . As the author says if your car has relays doing the switching, a small diode will do but an unmodified car running halogens will need a hefty type such as a 15SQ045. Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Ha Ha look what Ive found Rob Quote Link to post Share on other sites
RobH Posted January 10 Report Share Posted January 10 Yes that's it - I'd forgotten that one. Good find. Re that note - no it won't work on positive-earth systems as drawn. Quote Link to post Share on other sites
stuart Posted January 10 Report Share Posted January 10 3 hours ago, phil Dean said: Hi All. Please see below does anybody have the original version of this article I am struggling to read it especially the wiring diagrams. Thanks Phil. Looks like that article was scanned out of a copy of TR Action magazine technical article pages. Stuart. Quote Link to post Share on other sites
Allan Westbury Posted January 10 Report Share Posted January 10 Issue 227 page 31 Quote Link to post Share on other sites
Allan Westbury Posted January 10 Report Share Posted January 10 I have had fitted since the article came out. Probably the best mod I have ever done to my 4A Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Alan how do I get to that article is even possible my mags don't go back that far. Rob mines a neg earth car, Phil Quote Link to post Share on other sites
Allan Westbury Posted January 10 Report Share Posted January 10 Phil, I printed mine off from the TRAction resources section on the club website. The diagram isn't that clear but I found best to print the article than read the diag with a magnifying glass. High tech at its best! cheers, allan Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Ok I will give it a go. thanks Quote Link to post Share on other sites
RobH Posted January 10 Report Share Posted January 10 (edited) The article is from 2008 so that relay is the old type. As I said, the circuit won't work with the relay available now unless you swap the connections for pins 30 and S . Also there are better and cheaper options for the diode referenced - such as the one I noted above. Edited January 10 by RobH Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Thanks Rob I will use this and your diagram on how to wire the Relay. Quote Link to post Share on other sites
Allan Westbury Posted January 10 Report Share Posted January 10 Here is a scan of the original article. Apologies it is upside down.Issue 227 - Page 31.pdf Quote Link to post Share on other sites
phil Dean Posted January 10 Author Report Share Posted January 10 Thanks Allan that’s a lot clearer than the one I have .yes it’s upside down but it will print ok phil Quote Link to post Share on other sites
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