Final questions for M50 - HELP!

[Frog]

bump

[Frog]

I have a 84. I am running a wire, separate from the harness adapter.


This wire, where to I bring it? The back of the cluster?

[Chrisv006]

^ Wiring adapter is complete, I am just wondering where to connect the wire for the check engine light. I splice it behind the cluster?

C101 - Function - X20
....
12 - CEL - 8
....


Should be gray to gray...through the c101/x20. Mine is (1987) and my CEL works

[Frog]

^ Wiring adapter is complete, I am just wondering where to connect the wire for the check engine light. I splice it behind the cluster?

[Chrisv006]

Some good info in here...

http://www.r3vlimited.com/board/showthread.php?t=72929

Post #56 has a working early model diagram. Matched what I made (works just fine on a 87 325is). But, as always, be wary of using other people's diagrams.

[Frog]

^ thanks guys!

1. Answered
2. Not answered
3. Answered
4. No answer. PLEASE HELP WITH C104.
5. Answered


So, I need help with the C104. Wires: white/yellow, green, and black. Black is RPM, and White/yellow is fuel consumption. I have the wire for the check engine light, where do I connect that one?

[samiam3356]

E is return. D is supply. The return always comes off the fuel pressure regulator.

+1 he's right

[PeaveyBassist]

E is return. D is supply. The return always comes off the fuel pressure regulator.

[Frog]

1. Answered
2. Not answered
3. Answered
4. No answer. PLEASE HELP WITH C104.
5. Need clarification/confirmation of D and E

[Frog]

The line with the fuel filter goes to D.

E is your return line.

Are you sure?


E goes to the fuel rail, but seems to have a fuel regulator. For this reason, I assumed it was NOT the return line. It is the one towards the BACK of the engine.

Here is a better picture of D and E.

[Schwarz325]

The line with the fuel filter goes to D.

E is your return line.

[Frog]

^thanks

You're keeping the charcoal canister?

Well, in a thread I read, people say to just keep it. I have mixed info on this one. I guess i wont use it, what do I do with the hardline from the fuel tank?

[cabin]

One side (large) of the charcoal canister goes to the fuel tank, the other side (small) to the pressure valve and then to 'C' on your picture.

Both A and B are for coolant circulation to the throttle body, one is in the other is out. I have that circuit deleted since it's not really needed unless you are driving in sub-zero temperatures.

[Jand3rson]

You're keeping the charcoal canister?

[Frog]

Questions:

1. answered
2. ???????
3. kind of
4. No answer
5. Partial answer.
......5.a. What does 'A' go to?
......5.b. E is coming from fuel filter, right?
......5.c. C goes to which pipe on the charcoal canister?