Ok I have 4 white connectors, 2 male and 2 female but somehow in my lack of knowledge about the 13BT I wound up with one of the connectors on the wrong side. So any assistance that could be provided would be wonderful. Also I have a huge huge favor to ask of some kind soul out there. If anyone could get some good high resolution pictures of their engine that would be a massive help. BTW this is an 88 car and S4 engine.

 

The upper left circle should be the connector for the AIC (IAC? hell don't remember the exact acronym for it) the Air Idle controller. This solenoid sits on the upper intake manifold facing the firewall. J-Spec cars don't have it, if memory serves.

Lower right hand circle should be one of the two connectors for the ACV. There should be 2 two-wire connectors for the ACV one black one white.

Lower left hand circle not 100% can’t see is to well.

- Dana

 

lower left looks like the firewall ground to the back of the engine

 

no he has that ground you can see by the wiper relay.. that one is boggleing

 

Top left......Air Supply Valve

Lower left.......oxygen sensor plug. I see the long tap is bent up, typical of a oxygen sensor plug.

Far right......Either the Port Air or Split Air Solenoid plug. Both solenoids are located on the ACV and have long harness leads to reach over TO that plug. Being a WHITE plug, it should be for the Split Air Solenoid. If you don't have two solenoids on your ACV....then it's a japspec engine and I don't believe they had a Split Air Solenoid.

 

I thought that green plug in the middle is the oxygen sensor plug... If that lower-left white plug is the ECU-side oxygen sensor plug, then what is the green plug plugged in to?

 

Yeah. I'm most likely wrong. Wire colors would mean a lot more than the somewhat blurry pic. If the green is not connected to anything...then it would go to the lower left plug. Colors, please. Like black/white, indicating a black wire with a white stripe, or black/blue, a black wire with a blure stripe etc.