The resistance on the BY wire looks low, but there's nothing indicating a short on the LR or BW wires.

If you're searching for keyed 12V in the engine bay my car is not to far off of Duffy's - 12/70. I found an unused keyed 12V bullet connector lead in the harness by the battery. Like the plug in front of the console for the electric fuel pump it was in blue tape. I used it for the electric fan controller relay. Both the blue tape and fan controller can be seen in this shot.

3 hours ago, SteveJ said:

The resistance on the BY wire looks low, but there's nothing indicating a short on the LR or BW wires.

I will try and research that circuit. See what it goes to. You would worry about that one? 

1 minute ago, duffymahoney said:

I will try and research that circuit. See what it goes to. You would worry about that one? 

Not really. That is the wire out to the solenoid. You can take the other end off the solenoid and read it again.

52 minutes ago, SteveJ said:

Not really. That is the wire out to the solenoid. You can take the other end off the solenoid and read it again.

So I think I figured out the short, it was actually mine dumb idea.  Originally I was using the G/W wire from behind the tach to pulse (DO) output from the ecu for the IAC.  I thought (wrongly) that the wire only went from behind the tach to the coil. and it was a simple way to wire my IAC without adding any new wire.  But it also went to the ignition 12v, so when it pulses a negative to run the iac, it was creating a short to the ignition.  I have fixed that aspect, but boy was that dumb.  

1 hour ago, w3wilkes said:

If you're searching for keyed 12V in the engine bay my car is not to far off of Duffy's - 12/70. I found an unused keyed 12V bullet connector lead in the harness by the battery. Like the plug in front of the console for the electric fuel pump it was in blue tape. I used it for the electric fan controller relay. Both the blue tape and fan controller can be seen in this shot.

I have that same wire.  So it's just a dangling 12v keyed?! Good old Nissan.

1 hour ago, duffymahoney said:

So I think I figured out the short, it was actually mine dumb idea.  Originally I was using the G/W wire from behind the tach to pulse (DO) output from the ecu for the IAC.  I thought (wrongly) that the wire only went from behind the tach to the coil. and it was a simple way to wire my IAC without adding any new wire.  But it also went to the ignition 12v, so when it pulses a negative to run the iac, it was creating a short to the ignition.  I have fixed that aspect, but boy was that dumb.  

No, it was just a lack of knowledge. Dumb would have been leaving it there after you have learned about how you needed things to work.

And, BTW, my suggestion about de-pinning the BW wire from the engine harness connector probably would have removed that issue, too.

Edited August 19, 20222 yr by SteveJ

59 minutes ago, SteveJ said:

No, it was just a lack of knowledge. Dumb would have been leaving it there after you have learned about how you needed things to work.

And, BTW, my suggestion about de-pinning the BW wire from the engine harness connector probably would have removed that issue, too.

Yeah, getting to those connectors is my issue! I would love to actually use that B&W and fuse it right there, for my iac.  But again, it's behind a giant AC.  

4 minutes ago, duffymahoney said:

Yeah, getting to those connectors is my issue! I would love to actually use that B&W and fuse it right there, for my iac.  But again, it's behind a giant AC.  

All you have to do is magically contort your arms to reach behind the evaporator and use your x-ray vision to see the wires & connectors. 

2 hours ago, SteveJ said:

All you have to do is magically contort your arms to reach behind the evaporator and use your x-ray vision to see the wires & connectors. 

Also the hose lines, which are filled with hard to get legit gas.  

Well I found one issue. That seems to come and go, but getting worse. It used to be like 1 out 10 times. Now it 9 out 10. Ignition switch is failing 

7 minutes ago, duffymahoney said:

Well I found one issue. That seems to come and go, but getting worse. It used to be like 1 out 10 times. Now it 9 out 10. Ignition switch is failing 

IMG_0461.MOV

Your MOV files aren't embedding properly. You'd have better luck uploading them to YouTube and linking them that way.