Author Topic: Fuel pump wire color on ignition switch.  (Read 2849 times)

Fitsole

  • Newbie
  • *
  • Thank You
  • -Receive: 1
  • Posts: 16
    • View Profile
Fuel pump wire color on ignition switch.
« on: November 30, 2013, 04:35:29 PM »
My ignition shaft behind lock cylinder broke. I decided to buy a push button start instead of a 260 dollar housing. My key turns enough to power my accessories. I got the push button start in. It's cranks but won't start. I turned my radio off and listened to see if my fuel pump comes on. It is not. I want to wire a toggle switch to my fuel pump from the back of the ignition switch. I need to know which wire it is. I can't download wiring diagrams on my iPhone so I can't see them.
92 calypso red 318ic. Turner Motorsport performance chip, m20 flywheel, dynomax max turbo muffler ran into straight 3 in pipe cat delete, 4,27 LSD, bilstein sport shocks/struts, and springs, 205 40 17 TSW EVO Rs wrapped in kumho ecsta high performance tires.

DesktopDave

  • Administrator
  • Legendary
  • *****
  • Thank You
  • -Receive: 60
  • Posts: 5076
  • Lives in the 80s
    • View Profile
    • The Iconic BMW
Re: Fuel pump wire color on ignition switch.
« Reply #1 on: November 30, 2013, 06:52:06 PM »
I replied in your other thread - you'll need to run that red wire to the green DME power wire. I'd wire two relays - one with a toggle switch to power the relay on the DME green power wire and then a push-button to pulse the relay on the black/yellow starter wire.

 IIRC those two wires are the only ones that the car uses in 'start' and 'run.'
'08 Karmesinrot 128i 6MT
'86 Zinnoberrot 635CSi (M30B32/G265/3.46 torsen LSD)

Sold: '97 Montrealblau 318iS, '91 Brilliantrot 318i, '91 Brilliantrot 318iS