Ok So I Just Installed My Turbo ll Harness on My 88 s4. My 2 Problems Now Consist Of There Is No Plug For The Bac.. And The Connectors For The Crank Angle Sensor Do Not Match...Im Completely Stuck Here, And Dont Know What To Do... N e Ideas N e One??? Please Help Me.. on the harness the connector is a 2 wire connection... and on the crank angle sensor its a 4 wire connection.. the harness came off a s4 turbo ll... any help would be great thanks

 

the first thing is that the plug for the CAS is not in the ECU harness it is in the same harness as the alternator. be more specific about the BAC aer you missing the whole plug?

 

Couldn't be more right. Here's a jpg showing what harness the CAS plug goes to.

 

well i didnt have n e kind of plug for the bac. i have just one open plug now.. it seemed as if it would have gone to the bac.. but it doesnt fit ill have to take pics, and *** them.. thanks though for the help didnt know the cas plug was on the alternator harness.. thanks guys.. ill get pics for the plug i have that has no set up at all.. thanks

 

IF the only harness you changed out was the EM harness that mounts on the engine (fuel injector plugs etc) then the CAS plug is still on the harness that it was on before you started messing with the car.

And the Alt plug will not be found if this is a non turbo that now has a Turbo EM harness on the engine.

The Turbo cars alternator plug is on the Engine harness that routes on the left side of the engine bay.

The non turbos alternator plug is a part of the EM harness (the one you removed to put in the Turbo EM harness).

In the jpg attached, the EM harness on the engine is colored black/white. The ENGINE harness is colored BLUE. The FRONT harness is colored RED.

Before you tried to convert the engine, you should have read and understood the threads on this site that deal with swapping from non turbo to turbo. You wouldn't have your present problem if you had.