edviss Posted October 14, 2020 Share Posted October 14, 2020 Hi All, I bought a 1994 2JZGE Supra with couple of issues. None of the illumination work in the dash, heater does not blow but you can adjust from cold to hot and that works. Tach does not work either, all other gauges including speed do work. I tried going through interior fuses but they all seem to fine, unless there is one missing? I don't have a cover to check. If it is not a fuse related, anyone has any sugestions? Quote Link to comment Share on other sites More sharing options...
Style Posted October 14, 2020 Share Posted October 14, 2020 Pull the clocks out and have a look at the circuit that runs along the back of them. I had a wire on mine melt through which I had to get repaired. No idea what caused it unfortunately https://old.mkivsupra.net/vbb/attachment.php?attachmentid=227387&d=1527578423 Quote Link to comment Share on other sites More sharing options...
edviss Posted October 14, 2020 Author Share Posted October 14, 2020 Pull the clocks out and have a look at the circuit that runs along the back of them. I had a wire on mine melt through which I had to get repaired. No idea what caused it unfortunately https://old.mkivsupra.net/vbb/attachment.php?attachmentid=227387&d=1527578423 Thank you, i will try to take this out tomorrow to check the back of it. Quote Link to comment Share on other sites More sharing options...
mattdavies Posted October 15, 2020 Share Posted October 15, 2020 Also check the HVAC switches are are plugged in properly, mine didnt work and the orange wiring connectors werent pushed in correctly Quote Link to comment Share on other sites More sharing options...
edviss Posted October 15, 2020 Author Share Posted October 15, 2020 Also check the HVAC switches are are plugged in properly, mine didnt work and the orange wiring connectors werent pushed in correctly I think it might have a bad connection in general as when I move the plugs around while they are plugged in, Lights on the heater goes on and off. Quote Link to comment Share on other sites More sharing options...
edviss Posted October 15, 2020 Author Share Posted October 15, 2020 Pull the clocks out and have a look at the circuit that runs along the back of them. I had a wire on mine melt through which I had to get repaired. No idea what caused it unfortunately https://old.mkivsupra.net/vbb/attachment.php?attachmentid=227387&d=1527578423 Cluster seems to look fine, how comes middle plug connects to nothing? https://scontent-lhr8-1.xx.fbcdn.net/v/t1.15752-9/121672438_340386527176211_5270291022321392378_n.jpg?_nc_cat=107&_nc_sid=ae9488&_nc_ohc=qzss05zJkksAX_5tuIF&_nc_ht=scontent-lhr8-1.xx&oh=295bcafe2fc0a9d421034c0397abebe5&oe=5FAEB8B0 Quote Link to comment Share on other sites More sharing options...
Style Posted October 16, 2020 Share Posted October 16, 2020 Cluster seems to look fine, how comes middle plug connects to nothing? https://scontent-lhr8-1.xx.fbcdn.net/v/t1.15752-9/121672438_340386527176211_5270291022321392378_n.jpg?_nc_cat=107&_nc_sid=ae9488&_nc_ohc=qzss05zJkksAX_5tuIF&_nc_ht=scontent-lhr8-1.xx&oh=295bcafe2fc0a9d421034c0397abebe5&oe=5FAEB8B0 The housing is likely the same for a variety of Supra's...maybe even other Toyotas too. So it'll just be for a plug that your Supra doesn't have. Maybe autos use it or something as my manual doesn't have a plug there either. Quote Link to comment Share on other sites More sharing options...
Iky Posted October 17, 2020 Share Posted October 17, 2020 Cluster seems to look fine, how comes middle plug connects to nothing? https://scontent-lhr8-1.xx.fbcdn.net/v/t1.15752-9/121672438_340386527176211_5270291022321392378_n.jpg?_nc_cat=107&_nc_sid=ae9488&_nc_ohc=qzss05zJkksAX_5tuIF&_nc_ht=scontent-lhr8-1.xx&oh=295bcafe2fc0a9d421034c0397abebe5&oe=5FAEB8B0 Middle connector is for the auto part of the cluster I think. Quote Link to comment Share on other sites More sharing options...
Iky Posted October 17, 2020 Share Posted October 17, 2020 Hi All, I bought a 1994 2JZGE Supra with couple of issues. None of the illumination work in the dash, heater does not blow but you can adjust from cold to hot and that works. Tach does not work either, all other gauges including speed do work. I tried going through interior fuses but they all seem to fine, unless there is one missing? I don't have a cover to check. If it is not a fuse related, anyone has any sugestions? [ATTACH]525590[/ATTACH] Check against the workshop manual on the homepage. Quote Link to comment Share on other sites More sharing options...
Noz Posted October 18, 2020 Share Posted October 18, 2020 Check the manual. See which pin lights up the dash. Check it for voltage. You can also hear the relay turn on and off if you gave no meter meter. In the footwell. Quote Link to comment Share on other sites More sharing options...
edviss Posted October 19, 2020 Author Share Posted October 19, 2020 Check the manual. See which pin lights up the dash. Check it for voltage. You can also hear the relay turn on and off if you gave no meter meter. In the footwell. Relay clicks with no issues, also when I test with voltmeter 12v comes to dimmer once lights are turned on. Quote Link to comment Share on other sites More sharing options...
edviss Posted October 29, 2020 Author Share Posted October 29, 2020 Quick update on the electrical issues I had. Removed complete dash to inspect everything.. Illumination was due to a burnt wire from the body plug. Had to replace complete wire in the loom plus the dimmer. Heater blower motor was dead as well, thanks to Keron for getting me that next day delivery. Tach resistor keeps burning, replaced with a new one 43k ohm worked for 5min died again :D Quote Link to comment Share on other sites More sharing options...
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