The Big Push - Day 1 (wiring)

It has come to this.

Through the week I booked the exhaust for 9/12 and rego inspection for 12/12, so there is a real urgency now to knock-off the last items on the to-do list... the majority being related to keeping smoke within wires.

We had mini working bee Tue night to fit the battery tray and drill through the firewall on the passenger side for battery positive, thermo fan and starter wires.

During the week, various parts were acquired ready for a committed weekend of wiring...
- 25 mm2 cable (battery to starter, batter to alt, ground)
- lugs for 25mm2 cable
- distribution post for feeding battery +ive to various circuits
- relay base (will reuse a relay from the VZ for P/N start conditioning)
- plug for thermo fan connection
- 10mm dia split conduit
- 16mm dia split conduit

So to the weekend: a HUGE double header from JtC, making the trip north on both Sat (wiring till midnight) and Sun in an attempt to get the beast started.

First mission:
- Create new battery/ground cables.
- Wire the battery positive/starter/alternator/ground harness.
- Wire the existing Chev battery positive harness to the existing horn relay.
- Wire constant power source (red 2 x 6mm wires) from EFI to battery positive...




Detailed shot of the battery +ive distribution post arrangement...




Secondly: Wire the fuel pump (purple 4mm wire). We ran the wire under the carpet (down the passenger side of the car), under the base of the seat and dragged it though into the boot using floor board tongue...




From there we passed it under the car, through a re-purposed grommet (that was used for the old fuel tank vent), up to the fuel pump and terminated.


Third task takes place under the dash (hard to take photos as the wiring is so well hidden!):

Wire a starter relay which is conditioned to feed the starter solenoid only when the trans is in Park or Neutral (managed by the ECU... the existing Chev P/N switch is by-passed).

We grabbed a relay from one of the VZ relay blocks and mounted into a relay base that clipped to the end of the string of relays in the ECU harness.

existing Chev start trigger wire = pin 86
grey 2mm wire from ECU = pin 85 (switched ground).
existing Chev start trigger wire = pin 30 (looped from the feed to pin 86)
wire to starter solenoid = pin 87


Fourth: Wire the thermo fan (green 2 x 5mm wires).



More tomorrow.

J