Rahile Posted November 30, 2003 Share Posted November 30, 2003 hi has any one fitted the Power Earth Cable from Takakira? http://www.takakaira.co.jp/asp/template.asp?id=683&cat=2&prodID=STtPqQqlnMokrNm if does do what they say then i would like this too, probably make one up myself, what would be the best connecting points? Regards Rahul Quote Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 30, 2003 Share Posted November 30, 2003 Mine should be here in about a week, I think. I can feedback once it's fitted. Ben.. Quote Link to comment Share on other sites More sharing options...
Rahile Posted November 30, 2003 Author Share Posted November 30, 2003 that will be great ! let us know where the connection points are. what is "vehicle section sensor" cheers Rahul Quote Link to comment Share on other sites More sharing options...
jagman Posted November 30, 2003 Share Posted November 30, 2003 you are willing to pay £80 for a bit of cable:eek: im in the wrong business, got some old rope if you want £50:p Quote Link to comment Share on other sites More sharing options...
Steve W Posted November 30, 2003 Share Posted November 30, 2003 .....must get some Glass-ier Glass TOO ! ! ! (there was me thinking my headlights were ALREADY properly earthed..... ho hum, you 'learn' sonething new every day ) Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 30, 2003 Share Posted November 30, 2003 As it goes, from an electrical point of view, I can see how a 'powered earth' system could be beneficial. I'd be interested in your findings Ben. Quote Link to comment Share on other sites More sharing options...
Steve W Posted November 30, 2003 Share Posted November 30, 2003 You mean if something's not properly earthed ALREADY ? ? IF all the earths / wiring / connections are as they should be........ .......then ? ? ? :conf: Quote Link to comment Share on other sites More sharing options...
400BHP Posted November 30, 2003 Share Posted November 30, 2003 I'm interested in your interest Matt, sarcasm perhaps? A "powered earth?" is this a rough jap translation? Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted November 30, 2003 Share Posted November 30, 2003 It's down to the amount of resistance throughout the cars bodywork. - The theory is, that you will have an amount of resistance where the factory earth points are, so you run direct earth cables straight to the common earth points on the car... Almost all car audio related interference is down to a ground loop. The head unit has a different ground potential to the amplifiers. This then tries to compensate for this through the cables they have in common... The RCA leads, which causes the whistle as the engine revs rise and the earths power differential grows... I can physically see how it could make a difference. I've got automated headlights on my car, and the difference in voltage, (caused by resistance from the alarm/cabling/relays etc), is about 0.35 volts, but it makes a noticable difference if I manually turn on the headlights. (I will get around to remedying this sooner or later.... Maybe). When you consider that the price for this kit is about £80 ish, (depending on where you look), it does sound expensive. You're paying for someone to put all the ring terminals on the ends of the cables, a battery clamp with distribution points/multiple connections, and a diagram showing where all the factory earth points are... The benefits range from better lighting, direct supplies to ecus which could make them work faster/better, stronger engine sparks, motors working faster, etc... Does that make sense? - Can you see why I'm interested? Quote Link to comment Share on other sites More sharing options...
jagman Posted December 1, 2003 Share Posted December 1, 2003 unless your existing earth points are corroded , this will be a pointless exercise,yes audio signals can be affected,but as for headlights etc ???,even ecu,s are more likely to be affected by voltage spikes more than anything else,strikes me as "snake oil" unlike my old rope for £50:) Quote Link to comment Share on other sites More sharing options...
Digsy Posted December 1, 2003 Share Posted December 1, 2003 Originally posted by Matt Harwood I can physically see how it could make a difference. I've got automated headlights on my car, and the difference in voltage, (caused by resistance from the alarm/cabling/relays etc), is about 0.35 volts, but it makes a noticable difference if I manually turn on the headlights. (I will get around to remedying this sooner or later.... Maybe). I saw this myself when doing some wiring on my car - different potentials between terminals that should all have been 0V - 12V. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 1, 2003 Share Posted December 1, 2003 Originally posted by jagman even ecu,s are more likely to be affected by voltage spikes more than anything else Why do you think that ecu's would stand more chance of spiking when they have a better power supply? Quote Link to comment Share on other sites More sharing options...
400BHP Posted December 1, 2003 Share Posted December 1, 2003 Matt, How much would you charge me for some heavy gauge battery cable and a few ring terminals?? Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 1, 2003 Share Posted December 1, 2003 LOL, I'd guess you'd need about 4 metres of 8awg cable and about 12 ring terminals... Bear in mind that I don't know all the recommended connection points, so it could be more.. That lot would probably be about £20 based on gold ring terminals.. Quote Link to comment Share on other sites More sharing options...
jagman Posted December 1, 2003 Share Posted December 1, 2003 they wouldnt, but ecu,s dont suffer from grounding problems,more prone to spiking,usually all electonic boxes are fairly well protected from earthing probs,and if any cars chassis is rust free "extra" earth /bonding leads are unnecessary,if any one system ie lights,or heater is poor due bad earth return why not just replace that one wire,rather than re-earth the complete car with £80 worth of cable? Quote Link to comment Share on other sites More sharing options...
400BHP Posted December 1, 2003 Share Posted December 1, 2003 Its always a good idea to measure the impedance difference between the batery earth post and certain strategic points on the car, such as, the gearbox, the cylinder head, the starter motor chassis, the alternator and believe it or not, the intake manifold. Also between the earth post and the chassis at several different points. As copper has a higher conductivity and lower impedance than the steel of the body, it will carry a more functional earth to critial points than the chassis will, these points would be the earth terminals for the management systems etc, this is all documented in the wiring section/component location in my genuine workshop manual *snigger* Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 1, 2003 Share Posted December 1, 2003 Originally posted by jagman they wouldnt, but ecu,s dont suffer from grounding problems,more prone to spiking,usually all electonic boxes are fairly well protected from earthing probs,and if any cars chassis is rust free "extra" earth /bonding leads are unnecessary,if any one system ie lights,or heater is poor due bad earth return why not just replace that one wire,rather than re-earth the complete car with £80 worth of cable? I think you're missing the point. The kit isn't supposed to 'repair' bad earths, it's supposed to improve on the earthing points already in use, to improve voltage flow. Chris's explanation above is pretty much spot on. I'm not saying it's going to give masive improvements, but still could be worth a thought. It's an easy and cheap enough thing to do, that could be beneficial. I'm sure the ecu's would hardly benefit from it at all, but if it can make the windows wind up a tad quicker, make the headlights slightly brighter, seat heaters more efficient, where's the downside? People spend a lot more on stuff that is far less worthy. Quote Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted December 1, 2003 Share Posted December 1, 2003 I just thought it looked pretty!?!? Ben.. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted December 1, 2003 Share Posted December 1, 2003 It does mate. Don't you worry about these nasty people doubting your new toys Quote Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted December 1, 2003 Share Posted December 1, 2003 Thanks Matt, if it works, I'll may let you copy it , these nasty people can forget it. Unless of course they can help me later with the install of the SBC-ID and Powermeter etc etc!! :D Ben.. Quote Link to comment Share on other sites More sharing options...
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.
Note: Your post will require moderator approval before it will be visible.