full pump wiring question

[nismoman]

94 m50 vanos to 85 325e

green violet to green violet, is what i have but i know the fule pump has o see the engine running, is that done through the dme or what. also i dont have my c104 connector under the dash hooked up. do i need to have a green wire hooked up in there to give power. some body who has wired there car up help me out on the wiring for my fuel pump please.

thanks

[DaN]

With my s50 into my 90 325i, I really didnt have to mess with fuel pump wiring, other than at the c101. I believe the DME will control the Fuel pump relay, because mine primes when turning the key on. Never did that with the m20.

[nismoman]

green violet to green violet, i dont get it, i know the e car doesnt prime the fuel pump and thats weird that your now primes right off the get go, my fuel pump needs to see the engine cranking to start pumping so i believe i need to hook the speed input signal which for you round plug 325 guys is pin 14 on the e36 black white to i belive pin 14 on the c101 plug but the 325e 85 harness had no such setup in the c101, because it pick up its signal from the bell housing. hmmmmmmmm

[87-325ic]

because it pick up its signal from the bell housing. hmmmmmmmm

ever figure this one out? anyone else? i fear i will see this problem too.

[85Ecoupe]

i know its a lot of freaken cash, but Tree house makes a harness connector for us square plug guys, just found that out today

[nismoman]

yeah but 400 bucks is rediculous to charge for what it is, i meen i have power the car cranks, but nobody knows how to get the fuel pump to work r how to wire up the cranking signal?? and ive already cut my harness up so i would have to re attach the old x20 connector to use the tree house one. some body has had to of swapped there e30 e car with a square plug, if not then i feel really really special! everybody says that the c104 control tach, and fuel consumption tach is blk to black and the yellow white is fuel consumption and you splic the swith power green to the green red. the only thing i haent done is hooked the black white wirem50 side(which is supposed to be the speed input/speed of the engine/cranking signal)to the black, i will try this tomarrow and see. god damn this is rediculous.!