Question regarding VSS to 413 DME

[5mall5nail5]

I never hooked up VSS in my mothers E30 24v swap. I am running an E34 M50TU harness in the car - no idea of year on the harness. Looking through the ETM I see that Pin 42 shows as Vehicle Speed Signal TD, not pin 14 or whatever I see people referencing.

So tonight I think I will pull the cluster and run Pin 26 on C3 to Pin 42. Sound legit?

[FredK]

The reference to pin 14 is C101 pin 14.

I recall you have an early model E30, which means you'll have to run C104 pin 1 to x20 pin 14.

Pin 42 on the DME connector is vehicle speed as shown in the ETM. It also traces back to x20 pin 14.

[5mall5nail5]

The reference to pin 14 is C101 pin 14.

I recall you have an early model E30, which means you'll have to run C104 pin 1 to x20 pin 14.

Pin 42 on the DME connector is vehicle speed as shown in the ETM. It also traces back to x20 pin 14.

I don't have a C3 pin 26? Which is pin C104, again?

[frankie591]

My car pulls hard all the way to redline (no soft rev limit that I can feel) but one of my CEL codes is 1234 speedometer A signal. Does this mean my vss isn't hooked up correctly?

1897 325is w/ e34 m50 harness

[5mall5nail5]

My car pulls hard all the way to redline (no soft rev limit that I can feel) but one of my CEL codes is 1234 speedometer A signal. Does this mean my vss isn't hooked up correctly?

1897 325is w/ e34 m50 harness

Hang on man - let me figure out my stuff in my thread first, then post up yours. I am rocking a 6/86 build 325/E.

[frankie591]

I don't have a C3 pin 26? Which is pin C104, again?

c104 is a 3 wire black plug that should be up behind the glovebox. C3 is the big yellow plug that goes in the back of the cluster. Pin 26 on the c3 connector should be brown w/ red stripe as I recall and will be in one of the corners of the plug.

Sorry for the thread-jack :p

[5mall5nail5]

c104 is a 3 wire black plug that should be up behind the glovebox. C3 is the big yellow plug that goes in the back of the cluster. Pin 26 on the c3 connector should be brown w/ red stripe as I recall and will be in one of the corners of the plug.

Sorry for the thread-jack :p

No prob - its just confusing. I do standalone stuff so it's a LOT easier for me. I forget what connector is what.

C104 on my car doesn't have anything VSS related I do not believe. Tach, yes. I think. But not VSS.

So does every car have C3 pin 26? I'd rather tap to that. I don't want to go all the way from C3 pin 26 to X20 pin 14 because I'd be running wire down the harness just to go back to the ECU. I'd rather T C3 Pin 26 and bring it to Pin 42 on the DME...

Will that work for my '87 325e?

[frankie591]

pull the cluster and see if there is a brown/red wire going to one of the corners of your yellow cluster plug. If so, thats pin 26.

[5mall5nail5]

pull the cluster and see if there is a brown/red wire going to one of the corners of your yellow cluster plug. If so, thats pin 26.

Will do tonight - does the wheel need to come off to get the cluster out?

[frankie591]

Will do tonight - does the wheel need to come off to get the cluster out?

yup. big nut in the center to take the wheel off, then like 6 philips screws to get the trim and cluster off.

[FredK]

You don't NEED to take the wheel off to get the cluster out, but it makes things easier, especially if you're going to tap C3.

[5mall5nail5]

Pulled the wheel - pin 26 on yellow connector is brown/red. I'll cut and splice a new wire and just drop it over to the glovebox and tie it in at the ECU vs taking it out to the X20 or anything silly like that.

[woc]

Going through the same problem right now. Dude, you think you could pic document the process?

[5mall5nail5]

Going through the same problem right now. Dude, you think you could pic document the process?

Crap - already buttoned it up.

I am replacing the cluster bulbs when I get them in, so I will have it back out I will shoot some pics.

[lumbergh17]

Jon, I have also heard of people using the cam signal. Such as cars not running the stock cluster. Does anyone have any form to test the signal coming and compare them? That might save some hassle too.