Yes sir that is correct, the bat should be wired just as you said.
Additionally my wiring guide is not as perfect as I had Orginally thought 8 years ago. There are a few gremlins and landminds I have left in here. Thankfully the community has taken care of a lot of the issues for other people.
E3 idle are does need to be changed, it needs to powered by the Main Relay (M-REL) as people have said many times.
Sorry fellas for not changing or updating this for quite sometime. Hopefully I'll have time for the cars and such soon.
Thanks,
- Leon
Just to update this thread as I think it should be a sticky. After a few years I've done the same thing Lee. Found some gremlins here and there.
M-REL pin: As we've stated before the ISCV needs to be powered from the M-REL circuit so it stays on. Factory ECU turns on the EFI main relay either in the driver kick or the EFI relay 2 in the engine bay next to the fuse box. I did not trace this to find out as it didn't concern me much.
I ended up running the M-rel pin like the guide so the OEM one is still powering on but tagged off of it to trigger a relay behind the glove box for the ISCV and 3 heated o2 sensors power.
Relay wiring
85 - M-REL
86 - Ground
87 - 12v+ fused
30 - 12v+ output to ISCV, o2 sensor heaters
Once the car is together in the next couple of days I'll trace the M-rel pin and see which one if not both that it triggers.
STA: Starter input. I've found that having this connected changes the way the car starts and idles. Also if it is connected during start and disconnected while running the car dies. Should see 12v+ in the start position and ground when not (through the starter relay coil). If not this can screw things up and cause code 12 to pop up. This wire connection is the same for auto and manual ECU
Black/White heavy gauge at the same connector the water temp sensor wire is in behind glove box.
NSW: Neutral safety wire. Auto ECU with see ground in P and N gear position. Manual trans this gets 12v form the STA pin. Same with sta wire this mucks with how the car would start and idle etc...
Wire this per what ECU you have! connecting NSW on an auto ECU to 12v+ starter (car is manual trans) caused a code 12 for me
I ended up just jumping this over to one of the to main grounds. EO1 and EO2 pin 79/80
Tach: Nothing wrong with the guide here, but you can find Tach in a single wire connector at the igniter by the engine bay fuse box. Would keep from having to run