I have followed the below instructions basically spot on.... I have converted my 308 to a 304 top end on my HQ... I used a VS top end, a VN v8 computer/loom and modified the distributor plug to suit VS (signal,12v and ground wires simple).. Im running a Bosch in-line pressure fuel pump with a VL turbo fuel filter inline.
-- INSTRUCTIONS I FOLLOWED....
"Wiring instruction for a injected 5 litre conversion
Since everyone keeps asking, i have made up a list for the wiring from the vn - vs injected 5 litre loom.if you are doing a conversion in your vl or commordore
i have done a injected 5litre conversion on my calais (originally carby v8) and done all the wiring myself. I`m am running a trimatic. But wiring is same if you run the turbo transmission. It takes a good 2 - 4 hours to do and not hard to do yourself,
just gota have some auto elec knowlodge.
If you have any question about it just send me a pm.
You will need 2 relays (4 pin) , one is a fuel pump relay and the other is a efi relay.
On a realy there are 4 pins which have nubers next to the pins, the numbers are: 85(switch power), 86(negative earth), 87(power supply direct from battery), 30(wire to item that will receive power)
black plug on the efi loom in engine bay (near battery):
Red wire:
Positive(+) power supply for injectors when ignition is switched on. Need to connect this red wire to relay pin 87 (this will be the efi relay)
a 30amp fuse (before connection to pin 30 on relay).
Connect pin 85 on relay from a ignition on power supply ( a wire that will give positive power when ignition is switched on only) , connect pin 86 on relay to earth, and connect pin 87 on relay to direct battery positive (+) power.
So relay should click on and off when ignition is turned on and off.
Violet(purple) wire:
Positive(+) power supply for fuel pump (via oil pressure switch) when ignition is switched on. Need to connect this violet wire to relay pin 87 (this will be the fuel pump relay) via a 30amp fuse (before connection to pin 30 on relay)
also you will need to connect a wire from your fuel pump (+) with this violet wire to relay pin 87 (so two wires go on the same pin on relay) as this will give power to the oil pressure switch and fuel pump when the ignition is switched on
(the computer is designed to only run the fuel pumps when there is oil pressure as a precaution and thats why the violet wire runs through the oil pressure switch) .
Connect pin 85 on relay from green with white trace wire on the black pulg( this wire that will give positive power when ignition is switched on only via the computer for one second and then cuts out until you start the engine and there is oil pressure)
, connect pin 86 on relay to earth, and connect pin 30 on relay to orange wire on black plug ( this wire goes to oil pressure switch as a direct power from battery) and also you need to join a wire direct from the battery (+) to this pin(30) on relay as well.
(so two wires go on the same pin on relay). So relay should click on and off when ignition is turned on and off via the computer.
Orange wire:
Positive (+) wire to oil pressure switch direct from battery to fuel pump relay pin 30 ( read above in violet wire)
red with black trace wire:
Positive (+) power supply for computer. Connect this red with black trace wire direct to the positive (+) battery power (countinuas power) via a 30amp fuse. No relay required. This will give continuas power to the computer.
Green with white trace:
Fuel pump switch wire from ecu to fuel pump relay pin 85 (read above in violet wire). Will give power to fuel pump relay to switch on and off.
Grey plug on efi loom in engine bay (near battery next to black plug)
bule with white wire:
Ac cooling fan relay(gives negative (-) power) (not reqiuired to hook up this wire anywhere) or you can hook up you themo`s to this wire via relay (and it will switch thermo`s on when water gets to 91c) can be altered to
different temp via computer (need software)
light green with black trace wire:
A/c relay (not required to hook up this wire anywhere) unless you are running air cond.
Blue wire:
Oil pressure light, give positive(+) power to a oil presure light in cabin. Does not need to be hook up if you dont have a oil pressure light, or you can just put a small led light on you dash and hook it uo to that.
(optional) specailly if you run a oil pressure guage.
Green (next to blue wire) wire:
Coolant tempreture signal wire, this give you a reading on you water temp guage. Best to put a aftermarket electric water temp guage with new sensor, as the vl dash guage will give you a wrong reading with the orignal sensor on the motor.
Connect this wire to you reciveing signal on you tempreture guage.
Green with black trace:
Not required.
Brown wire:
A/c switch. (not reqiured to hook up anywhere) unless you are going to connect the air cond up.
Brown with red trace wire:
Tacho signial, hook this wire up to your rpm tacho guage.
Black plug on efi loom in engine bay ( the one with 2 wires):
Purple wire:
Starter motor solinied positve (+) power supply. This wire need to be hook up to igntion starter, so when you turn the key to start it give power to the starter motor to turn over.
Brown wire:
Alternator dash light positive (+) output, this wire needs to be connected to a battery light on the dash, otherwise ti will no charge the battery if it is not hook up to a battery light.
White plug on efi loom near computer (inside car):
Brown with white trace wire:
Check engine light negative (-) power output. (must connect) connect this wire to a light somewhere on you dash to negative wire on the light and the positive wire from the light should be connected to ignition on power.
Brown with yellow trace wire:
To trip computer. (not required to hook this wire up anywhere).
Pink plug on efi loom near computer (inside car):
This plug hooks up to your transmission wiring loom if you are running the turbo transmission. If you are running a trimatic or manual here are the wires to be connected:
Yellow with white trace wire:
Trip computer. (not required to hook up any where)
grey wire:
Inhibitor switch, negative (-) power input. This wire needs to be connected to you inhibitor switch on your gear stick so the computer knows when it is in park on netural.
If the car is manual than this needs to be earthed out to negative (-) continuasly.
Grey with red trace wire:
Tourque converter clutch solinied. (not required to hook up any where if not running a four speed transmission)
pink (next to grey with red trace wire) wire:
Anti theft circuit. Need to connect this wire to positive (+) ignition on, otherwise it will no run the computer, this wire can be hooked up to your immobiliser realy so the car will not
start unless this wire gets a positive power supply.
Light blue wire:
Auto transmission tempreture switch/ 4th gear. (not required to hook up any where if not running a four speed transmission).
This is all thats needed to do and the car will start.
good write up man, just wanna add three things to this thread off the top of my head.
pin 30 on a relay is the supply and pin 87 is the load. although it will still work the otherway around as they are just a set of contacts, the standard for wiring a relay is pin 30 supply and 87 load. This will make problem diagnosis easier down the track.
It also says to put a fuse in between the relay and the load, this doesnt completly protect the circuit. The fuse should be the first thing in the circuit from the battery to pin 30, that way all the wiring from the battery to the relay and all the way to the load is protected.
Last thing is the oil pressure switch doesnt inhibit fuel pump operation in the event of oil preassure loss. it is there incase the fuel pump relay becomes faulty, the engine can be cranked and when oil preasure is raised, the switch closes and runs the pumps.
To test this, unplug the oil pressure switch and it will still start and run fine. Or disconnect the fuel pump relay and crank the motor, when the oil pressure light turns off the fuel pumps will turn on and engine will start.
hey all.i have folowed this wiring diagram.
my car cranks over now.
i have problems with this part it doesnt work unles you bridge the violet wire mentioned up the start of this diagram.it cranks over with the pink wire hooked up but fuel pump only works when you bridge it to pink wire and now fuel pump primes constantly.how do i get it to work normaly?
pink (next to grey with red trace wire) wire:
Anti theft circuit. Need to connect this wire to positive (+) ignition on, otherwise it will no run the computer, this wire can be hooked up to your immobiliser realy so the car will not
start unless this wire gets a positive power supply."
After testing the computer for IGNITION/power on B1, A6 and C16 successfully and hearing my fuel pump prime, my engine warning/oil pressure lights shine I thought I was onto a winner..
Tested for pulse at injectors with noid light with no success.. Test power on coil with a test light with power on ignition it shines, but crank and nothing. Im also not getting any fuel delivery what so ever.. The above FUEL PUMP relay clicks and definately primes the pump on ignition...
Im quite sure I dont have spark, Ill get my spark tester tomorrow and double check..
Whats going on guys????
