Fuel pump wire from stock harness?: instaling a link g3

[goldenvtr]

Im struggling to find the wire that controllers the fuel pump

1994 GT:
ive made a new engine harness for my link g3 which is 90% complete now.
ive found the relay in the dash above the glove box which has a blue/white wire which turns the fuel pump on with 12v but is there a pin at the stock ecu i can splice into? cant see one in the many diagrams i have mentioning fuel pump.

failing that i dont mind running a wire straight to the fuel pump connector plug but which wire would need to be used to activate the relay and not a direct 12v to the pump?

All im waiting on now is some shielded wire for my VR sensor (crank) and to wire in the fuel pump then hopefully i can get it fired up.

Feel free to suggest or post your own installs

 

[goldenvtr]

looking at this diagram below on page 13 bottom right diagram labled "circut opening relay" the blue/white wire is fuel pump, would i be right in thinking i need to put my link g3's fuel pump wire to pin 2 labled "12V from ‘EFI’ Relay & ECU ‘BATT’ (Black-Red)"




http://www.toyotagtturbo.com/wiki/EP82wiring/EP82 Starlet Wiring and Connectors.pdf

 

[dac69er]

On my alarm, the wire for the fuel pump that is cut into is on a small multiplug behind the plastic cover by your right foot , drivers side.

 

[goldenvtr]

On my alarm, the wire for the fuel pump that is cut into is on a small multiplug behind the plastic cover by your right foot , drivers side.

awesome, ill check that out tomorrow, don't suppose you know the colour of the wire?....

gd point on the alarm too, been needing to fit my immobiliser relay

 

[dac69er]

if I get back at a decent time tonight I can have a look. but i only have my mk1 to hand so might be a different colour wire.

 

[weeJohn]

Easiest place to check is at the top cover of the fuel pump.

 

[5e colin]

its the white/bleu wire if im not mistaken on ur right footpannel there is 2 plugs there but its eay to see wich runs to the rear

 

[bongskag]

+1 colin , its part of the rear wiring loom. found it on golden VTR's link , loads of pins for all the stuff in the back

connector 30 :
Pin Wire Colour Function
1 Red-Blue From ‘Instrument/Dash’ Fuse
2 Green-Black Left Indicator ‘TL’
3 Green-Yellow Right Indicator ‘TR’
4 Green-Yellow Unknown – From C-63& C-82
5 Red-Yellow N/C to Engine Bay Loom
6 Yellow-Red Handbrake Ground
7 Black Demister Power
8 Green Rear Park Lights ‘T’
9 Green-Red (2Dot) Unknown – From C-63& C-82
10 Blue-White Fuel Pump
11 Green-White Rear Brake Lights
12 Red-Black Reverse Light
13 Blue-Red N/C to Engine Bay Loom
14 Yellow-Black Low Fuel Warning Signal
15 Yellow-Blue Fuel Level Signal
16 Blue Rear wiper power
17 Blue-Black Rear Wiper – Slow speed
18 Blue-Yellow Rear Wiper – Intermittent
19 Green-Red (1Dot) N/C to Engine Bay Loo

 

[goldenvtr]

all sorted cheers guys

 

[5e colin]

hey guys the black yellow wire on mine for low feul warning dont work ever but when i disconnect the wire the light comes on ??????????????
is my senser in the tank fekkerd ????

 

[weeJohn]

Those lights usually work by the supply voltage running to the light and the other side running to a switch to connects it to earth, making the circuit and lighting the light. Its very odd that it only comes on when the wire is removed, to me that would suggest that there is a short in that wire between the dash and the sender, but the fact that when the switch is connected it removes the short puzzles me.

 

[dac69er]

Those lights usually work by the supply voltage running to the light and the other side running to a switch to connects it to earth, making the circuit and lighting the light. Its very odd that it only comes on when the wire is removed, to me that would suggest that there is a short in that wire between the dash and the sender, but the fact that when the switch is connected it removes the short puzzles me.

it could be failsafe, so if the cable became damaged or the connection wasnt good it would bring the fuel light on? i havnt looked myself, but it would make sense for it to be wired like that.

 

[5e colin]

ha i see guys thanks for the info i only figured that out last year when the plug on the tank got REALLY HOT and gave a burnt plastick smell in the car and started to melt and i broke down no feul suply , so i cut off both male and female plugs and started to resolder the plugs on an testing wire by wire that it worked when the wire was disconnected !!!! 1s resoldered and heatscrinked al the wire , it dont work ever funny 1 that is

 

[weeJohn]

Could well be the heat has melted the wires together under the carpet and caused a short.

 

[5e colin]

ha thanks john will check the line for a draw or melting thanks