Power Wire for EFI Relay?

[Syris]

JZA70 Wiring

On pin connector 12 of the "T" connection, which is +B Switched Power I have been using pin 2 labeled BATT - Battery. I have been using this setup to get the car started but I cant leave the battery connected, otherwise within a few days of not driving the battery will be dead. I am in need help of which pin I can use that is not going to drain my battery if I leave it connected.

I tried using pin 4(W-Check Engine Light) which would show 12v with ignition on but would not start.

There is not an EA2 connector being used and it is a pre89 c1 connector, so it is hardwired in

 

[suprastanger507mgte]

Pin 2 and 12 come from the same wire. Batt and B+. They are joined together short distance into the harness.
This power comes from the connector near the fuse box.

 

[Syris]

Do you know which connector or how to pinpoint it out? Thanks I appreciate it

I feel this may be why I cant get a CEL either.

 

[aphxero]

Are you serious? Batt and +B have nothing to do with it. You're backfeeding +B keeping your efi relay on that's the drain.

You could try looking at a diagram some time.

 

[Syris]

Pin 2 and 12 come from the same wire. Batt and B+. They are joined together short distance into the harness.
This power comes from the connector near the fuse box.

1 and 12 actually connect together before going to the main relay

 

[Syris]

Are you serious? Batt and +B have nothing to do with it. You're backfeeding +B keeping your efi relay on that's the drain.

You could try looking at a diagram some time.

I already know that....so thanks for your help. Thats why im looking towards a solution.

 

[aphxero]

Solution is wire up mrel circuit. or make a new one right next to the ecu. how about coil side is mrel/ground. Then do your batt/+b circuit on the switch side?

 

[tissimo]

Yea, whats wrong with the mrel circuit in the ecu? it fry out or something. If not just wire it like stock.

 

[aphxero]

Yea, whats wrong with the mrel circuit in the ecu? it fry out or something. If not just wire it like stock.

If it's broken just wire igsw into mrel to the efi relay. That way at least it'll turn off with the key

 

[Syris]

Yea, whats wrong with the mrel circuit in the ecu? it fry out or something. If not just wire it like stock.

Im not seeing any voltage from the ecu harness side

If it's broken just wire igsw into mrel to the efi relay. That way at least it'll turn off with the key

I tried wiring the +B to IGSW but it still wont start on that.

 

[aphxero]

you have none to +b because thats the output of the efi relay. Check for power on the other side of the relay's switch. you could even close the switch manually with a piece of wire.

Sounds like you need to go through your harness.

 

[tissimo]

I tried wiring the +B to IGSW but it still wont start on that.

Wire you're B+ like stock, wire M-Rel to igsw, or something that provides 12v with the key on.

 

[Syris]

you have none to +b because thats the output of the efi relay. Check for power on the other side of the relay's switch. you could even close the switch manually with a piece of wire.

Sounds like you need to go through your harness.

Yea Ive been trying to jump it to another wire, but I think in the end its just going to serve me better to trace the wire and see if/where there is a break in the line.