Starderby Posted September 6, 2020 Report Share Posted September 6, 2020 Hey everyone, i want to give my ecu a Signal when the tank is empty(turn down boost), but also want to a have the option to turn it off by hand via a switch. So my idea was a 3 way switch, but I’m struggling where to put the DI to ... Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 6, 2020 Report Share Posted September 6, 2020 You dont need a three way switch, two options of how you could do it, one using an external 12V like your original schematic, the other using the ECU internal 12V pull-up: Quote Link to comment Share on other sites More sharing options...
Starderby Posted September 7, 2020 Author Report Share Posted September 7, 2020 Thank you ! This helps a lot ! Not knowing about all the potential, that ecu got Quote Link to comment Share on other sites More sharing options...
Starderby Posted September 8, 2020 Author Report Share Posted September 8, 2020 so i did it like this, all good, if the tank is empty, or i switch , the lamp turns on. But, the DI does not switch, its always on Activated. Where is my fault ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 8, 2020 Report Share Posted September 8, 2020 Are you using the bottom drawing? I didnt originally notice but now I see your lamp is an LED, this may not pass enough current to switch the DI. The top drawing should work though. Quote Link to comment Share on other sites More sharing options...
Starderby Posted September 8, 2020 Author Report Share Posted September 8, 2020 Yes I used the bottom one, will try the top one, when I got time! Thank you Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 9, 2022 Author Report Share Posted June 9, 2022 Hey there, fyi, i used the top one which is fine. I now want change it to a little more "fail safe" and also to clean up wiring , i want to use the attached switch ro realize it. Before i buy the pressure switch i just want to be sure, that it will work fine. But it should work like this or not? Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 9, 2022 Report Share Posted June 9, 2022 yep that would work. Starderby 1 Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 10, 2022 Author Report Share Posted June 10, 2022 Thank you ! Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 10, 2022 Author Report Share Posted June 10, 2022 I got one more question, i want that a specific light in the speedo comes on, when the pressure switch is activated, how do i set this up ? I know my tuner lets my check engine light blink, when my car hits overboost. I want something like this for this pressure switch. i hope its understandable. Kind regards Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 11, 2022 Report Share Posted June 11, 2022 Is the lamp in the speedo controlled by the ecu? Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 11, 2022 Author Report Share Posted June 11, 2022 I‘m Not sure about that , i want the Hicas bulb to light up, when the waes is Working. I know there is an extra ecu for the hicas. But i‘m Not sure of it’s wired up Directly to the speedo. There is also a bulb for overheated catalytic. That would be Fine too, aswell as the ABS, Because my car has none of These left. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 11, 2022 Report Share Posted June 11, 2022 If you wire whichever bulb you want to use to a spare aux output on the ecu then you can control it. None of them are connected to the ecu in stock form. Starderby 1 Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 11, 2022 Author Report Share Posted June 11, 2022 Okay Thank you, i will Try this! Quote Link to comment Share on other sites More sharing options...
Starderby Posted June 13, 2022 Author Report Share Posted June 13, 2022 Hey there, from the gtr Link Manual i Found, that aux5 is a free place. I think there is a mistake in the manual , it Lists aux1 2x Times. as far as i know, Pin 113 is vtc and pin 106 is empty, this should be aux5 ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 13, 2022 Report Share Posted June 13, 2022 The manual is correct, Aux 1 goes to 106 & 113, it is used for the fuel pump controller in GTR's and VTC in RB25 models. No cars have both devices hence the same aux can be used. Aux 5 is not connected. You have Ign 7 & 8 and Aux 11 on the expansion loom you can use, or possibly aux 2 is free on the main header - GTS dont normally have fuel pump speed control. Starderby 1 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.