Matt Harwood Posted February 14, 2003 Share Posted February 14, 2003 Can anyone tell me what wires do what at the base of the seats on a UK car? I've figured out how the heated seats switch works, and plugging the plugs in at the seats gets the motors working without any alteration to the wiring. What colour wire does the heater work on and whcih one operates the seat belt indicator? - Which way do they switch? (12v or earth) As there's only 4 wires, I'd guess that it's either a common earth or common positive setup. Any help would be greatly apreciated... Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 14, 2003 Share Posted February 14, 2003 Dunno about the rest of the questions Matt, but the seatbelt lights dont work on the UK spec from the factory... No idea why Gaz. Link to comment Share on other sites More sharing options...
SMW Posted February 14, 2003 Share Posted February 14, 2003 I started a "heated seats" thread a while back and Ian C kindly provided a link to a wiring diagram. http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=4811&highlight=heated+seats It might help with your query. Link to comment Share on other sites More sharing options...
Dragonball Posted February 14, 2003 Share Posted February 14, 2003 Is this anything like 'the Green Mile' Matt? Plugging in the seat? Mother -in Law visiting? Link to comment Share on other sites More sharing options...
Matt Harwood Posted February 14, 2003 Author Share Posted February 14, 2003 Originally posted by Paul E Is this anything like 'the Green Mile' Matt? Plugging in the seat? Mother -in Law visiting? Gimme a dry spong! Gaz, are you sure that ALL the UK ones don't work? SMW, ahh, the old search function... Thanks ! edited to say thanks to Ian for finding it in the first place. Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 15, 2003 Share Posted February 15, 2003 Originally posted by Matt Harwood Gaz, are you sure that ALL the UK ones don't work? Yup, all the cars I've seen dont have em and Martin F (the fountain of knowledge that he is) said they didn't work from the factory. My lexus ones do though Gaz. Link to comment Share on other sites More sharing options...
Bobbeh Posted February 15, 2003 Share Posted February 15, 2003 Gaz, whats with that? is it a bulb missing or the wiring from the seat belt holders themselves? Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 15, 2003 Share Posted February 15, 2003 Originally posted by Bobbeh Gaz, whats with that? is it a bulb missing or the wiring from the seat belt holders themselves? I am guessing both probably! It'll have the wiring from the seat I imagine it just probably wont be connected up to the holder and it wont have the bulb. Gaz. Link to comment Share on other sites More sharing options...
Matt Harwood Posted February 15, 2003 Author Share Posted February 15, 2003 You're right, the seatbelt lights don't work, and can't either. I've just connected up the heaters in the UK seats... Which leads me to another couple of questions: - What are all the wires for on the passenger seat of a J-spec? After connecting up the heaters on the UK seats, I'm left with 2 unused wires. Both white/black, one with silver bands. I assume these relate in some way to the seatbelt light. One rests on 9 volts when the ignition is on, the other rests at earth. If you apply 12 volts to the one resting on 9v, a relay, (or something that clicks), activates inside the drivers rear quater panel near the seatbelt location. You need to ground the 9v wire to disengage the relay... What is it? Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 15, 2003 Share Posted February 15, 2003 Originally posted by Matt Harwood After connecting up the heaters on the UK seats, I'm left with 2 unused wires. Both white/black, one with silver bands. I assume these relate in some way to the seatbelt light. One rests on 9 volts when the ignition is on, the other rests at earth. If you apply 12 volts to the one resting on 9v, a relay, (or something that clicks), activates inside the drivers rear quater panel near the seatbelt location. You need to ground the 9v wire to disengage the relay... What is it? Matt, On the Lexus when someone sits in the passenger seat the passenger seatbelt warning light comes on - so it could be the sensor wires to turn on the seatbelt warning light when someone sits in the passenger seat... Gaz. Link to comment Share on other sites More sharing options...
Matt Harwood Posted February 15, 2003 Author Share Posted February 15, 2003 I dont think so. I had the standard seats in the car until last week and the light never came on when a passenger sat in the seat and it was plugged in. Besides, there's 5 or 6 wires in the loom. You'd only need 3 for a seat switch and belt switch. Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 15, 2003 Share Posted February 15, 2003 My next guess is it must be for the ejector system as fitted to the aerotops Gaz. Link to comment Share on other sites More sharing options...
Matt Harwood Posted February 15, 2003 Author Share Posted February 15, 2003 LOL, I'm wondering if the wiring looms are ready for electric seats from LHD cars or the wiring's present for heated seats, (was that ever a JDM option?), or perhaps my passenger side seatbelt warning light was broken??? Link to comment Share on other sites More sharing options...
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