Quote:
Originally Posted by timbo
Hi Peter
Have also spent many hours on my wiring! I don't know exactly how similar your DME/EWS is to mine, but I'm still working on how to interface these with the rest of the wiring loom.
I'm going to try using the speed sensor signal from the switch on my rear diff (E36).
Found the crankshaft sensor which might operate the rev counter (?)
Will try tapping into the oil level and oil pressure wires (from the DME Module 3).
Theres only a couple of wires I think I will be using from module 4, the fuel relay and the EWS wire. There is a coolant sensor in there but I'm not going to use this.
I've been trying to simplify all the wiring down as there's absolutely masses of it, mostly too long, will put a pic up.
I will be ready to test it out in a couple of months  so I'll let you know if it works!!
Cheers
Tim |
Hi Tim,
yes, you can waste hours cross referencing all the diagrams!!
1. I used the e30 speed sensor on the diff for my speedo and it works fine.
2. On my M20, the rev counter is connected to the coil but the M52 has 6 individual coil packs so not sure yet where to get the feed. I'll be intrested to see if the crankshaft sensor works. My engine also has a vacant space for a sensor at the front of the cranshaft behind the fan, so that may be an option but not sure if the signal from a crankshaft sensor will be enough to trigger the rev counter? There must be a pin on the ECU that is RPM??
3. My oil pressure gauge uses a screw on adaptor between the oil pressure switch and the block, so I'm hoping it will also fit the M52. I didn't bother with the oil level sensor on the M20, its for people who don't know how to open the bonnet
4. I agree that the important wires on Module 4 are the fuel pump and EWS connections (also the OBD2 connections, maybe?). I'm going to experiment with them, but dont have this bit of the loom
5. My current radiator fan runs from a copper pressure bulb inserted in the top hose, so for simplicity I will stick to this, although the engineering eloquance(sp?) of using the BMW sensor and ECU does appeal!
My wiring is even worse because it was from an automatic so it has all the autobox cables as well!! I'm hoping most of this can be cut out.
Happy building!
Peter