E30 Zone

pin 15 on c101 does this go to body ground or to the 8mm on starter
thanks in advance
i hate wiring

Engine side, it goes to the 5mm stud on the starter

thanks but did you mean 8mm
my starter has 13mm 10mm and a 8mm
also do i remove it from c101 completely or just add a wire to it from the underside of c101

m5 stud would use an 8mm spanner size nut

Those are the hexagon nut sizes, the stud sizes are 8,6 and 5

Depends if you have it on the body side of the C101 or not

Cheers guys but do I tee into it or remove from c101 completely and move it to starter !

Ok so I take it from the m30 loom not body side ?
But if I do have it in both then leave alone !
E30 is 318is facelift

It's just one wire I know , but I am still unsure
Do I remove pin 15 from c101 plug engine loom or fuse box side ?
Or tee into it and run a wire down from the underside of c101 to starter

Ok, you need to list a few things here so we can understand what your trying to achieve

1. does the starter motor have 3 terminals?
2. does the engine loom have a Black/Green wire near the starter with a 5mm ring terminal on it?
3. does the body side of the C101 have a wire in Pin 15? (it should have as its a 318is)

If the answer to all the above is yes then you simply connect the wire to the starter and your done

1.yes starter has 3 terminals
2.m30 engine loom has small insulated wire with ring and is already fitted to 8mm nut
unsure on colours check tomorrow night
3.body side has wire in pin 15 (grn/blk)

am i aready done jus connect body and engine c101
thanks for helping

k20trew wrote:1.yes starter has 3 terminals

There's a possibility of confusion here. Dan means three terminals on the solenoid that you connect wires to, plus the second 8mm stud (13 mm nut) that connects to the starter motor body by a copper strap or braid.
Older style motor solenoids only had three terminals, including the second 10mm stud.

yes guys the starter pictured is the same as mine and is a bosch item
also engine and loom both from 91'e34
I also have connections at 9 & 3 o'clock can't be sure on colours until this evening

just been in garage this morning
my starter is wired as above with same colours
body/fusebox c101 has blk&grn in pin 15
engine loom c101 has blk&brown in pin 15

what do i do ?

I don't believe the blk/brown pin 15 from engine loom of c101 does go to 8mm on starter as the only wire connected here is blk/grn !
So I will pull pin out from body/fuse box c101
Then extend wire and put on 5mm (8mm nut) of starter solenoid !
So I am correct in thinking that blk/brown and black/green both pin 15 of c101 don't need a connection
Hence pulling blk/green out from c101
Thanks guys

I don't believe the blk/brown pin 15 from engine loom of c101 does go to 8mm on starter as the only wire connected here is blk/grn !
So I will pull pin out from body/fuse box c101
Then extend wire and put on 5mm (8mm nut) of starter solenoid !
So I am correct in thinking that blk/brown and black/green both pin 15 of c101 don't need a connection
Hence pulling blk/green out from c101
Thanks guys

Leave the black/brown connected at pin 15 of the C101 of the engine loom, and trace it along the loom. When you have sufficient wire to comfortably reach the starter motor, cut it re route it to the starter, attach a 5mm ring terminal to it, and connect it to the solenoid.

Great thanks ! Where does the blk and brown go ?
Just curious before I cut it

Does the engine loom you are using have a 'C101' plug on it that will fit into the socket on an E30?

Yes it does and two wires swaped as via swap guide

k20trew wrote:Great thanks ! Where does the blk and brown go ?
Just curious before I cut it

I've made some enquiries, and have been told it's an alternative unloader relay control circuit on some auto M30s, running between the gear selector, ECU, start relay and instrument cluster.
Just cut it, as above, and route it to the starter solenoid.

Briammoooore thanks so much !
Few small tasks left oil,filter,plugs ,fresh oil etc
Then start it