G54racer Posted July 24, 2010 Report Share Posted July 24, 2010 i remember seeing a write up a few years ago for a how to for our cars to wire the fuel pump(255) to the fuel pump relay instead of hard wiring it and i was hoping one of you would still have the link somewhere thanks for your time Link to comment Share on other sites More sharing options...
Shelby Posted July 25, 2010 Report Share Posted July 25, 2010 the fuel pump is on a relay,,??? not sure what your asking Link to comment Share on other sites More sharing options...
ucw458 Posted July 25, 2010 Report Share Posted July 25, 2010 I wasn't either so I didn't know how to answer this question. Link to comment Share on other sites More sharing options...
Indiana Posted July 25, 2010 Report Share Posted July 25, 2010 All you do is use the wires that are back there or you can use a larger gauge wire if you like as long as the wire from the control relay that does that is what is controlling your new relay with that larger gauge wire passing through it. The stock wire for that fuel pump circuit is 20gauge. If you are thinking about a larger gauge wire you'll need a relay and the wire from the battery and use a fuse link from the battery terminal for safety, to this new wire and use that white red/stripe wire to activate your new relay and leave the existing relay in tact that way your pump gets the new larger wire if you think you really need it. From top to bottom their color and control relay position according to the C/S service manual and a short description. BW-black/white stripe 01 / (+) output / turns on the Fuel Pump when starter is cranking or engine is running WR-white/red stripe 02 / (-) input / signal from ECU to activate fuel pump relay after ign. switch moves from "start" position and engine is running BR-black/red stripe 03 / (+) output / when ignition "on", this sends power to the injectors B -black 04 / (-) grounded to body BY-black/yellow stripe 06 / (+) input / from ign. switch "start" position this activates a relay that turns on the fuel pump R -red 05 / (+) output / when ignition "on", this powers the ECU L -blue 08 / (+) input / from ign. switch "on" position this activates a relay that powers the ECU and the injectors B -black 07 / (+) input / fuse link back to Battery positive terminal Here's the pigtail from the control relay. http://www.b2600turbo.com/images/IM000933.JPG The "control relay" is actually two relays ( magnetic coils ) in one and how the control relay functions is that when the ign. switch is in the "on" position that energizes one of the two coils via position 8 (14ga) and that takes the current coming in from position 7 (16ga) and passes it through to positions 3 and 5. When the ign. switch is in the "start" position that energizes the other coil to pass more of the current from position 7 through to position 1. This is above the ECU in the passenger foot well on the door posthttp://www.b2600turbo.com/images/IM000985.JPG http://www.b2600turbo.com/images/IM000993.JPG Link to comment Share on other sites More sharing options...
G54racer Posted July 31, 2010 Author Report Share Posted July 31, 2010 thanks for the info indiana Link to comment Share on other sites More sharing options...
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