daniel992008 Posted April 24, 2020 Share Posted April 24, 2020 Was wondering how everyone who has 1j swapped wired up the main efi relay. Cant figure out where the wires go the only option ive had atm is to join input and output together, so when i turn the car off the engine still runs. Pls help. The pins on the soarer loom that i dont know where to put are the 12th pin on the 14 pin grey plug and the 11th pin on the 17 pin grey plug Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted April 24, 2020 Share Posted April 24, 2020 (edited) Are you running a 1JZ engine loom from a Soarer, Chaser etc? I usually do it like: Find 'EFI Main Relay Trigger Signal' on the 1JZ engine loom side. Connect this wire to Pin13 (Ignition Switch) on 36Pin Orange MKIV Supra Orange Interior Plug. When you turn the key to ignition, the ignition switch will send 12v down the EFI Main Relay Trigger wire and activate the Main EFI 1 relay. When you turn key off ignition switch then relay will disable and ECU etc will turn off so engine stops. EDIT: Just seen above you are using soarer loom. 11th pin on 17pin grey plug is an ignition switch. This is an ignition switch, you can ignore this as the MKIVSupra interior plugs has an ignition switch you can use as explained above 12th pin on 14pin grey plug is Fuel Pump Control (FPC). Connect this to the 4th Pin on MKIV Supra Grey Interior Plug. If you haven't already been using this, use these sites to compare the pinouts between MKIV & Soarer Looms. http://wilbo666.pbworks.com/w/page/47216384/1JZ-GTE%20JZZ30%20Soarer%20Engine%20Wiring http://wilbo666.pbworks.com/w/page/41678224/2JZ-GE%20JZA80%20Supra%20Engine%20Wiring Edited April 24, 2020 by Mike2JZ (see edit history) Quote Link to comment Share on other sites More sharing options...
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