Lister Petter panel fitting problems

Lister Petter wiring diagram sent separately.
I have fitted the new panel but all not well.
The Lister Petter loom has 11 wires however 2 are for the "delux" panel so only 9 are actually carried on past the main connector plug to the panel. I have connected 8 to the new panel and don't know if the 9th is required or not.
If you refer to the wiring diagram I have connected as follows:
Brown to "Live Feed"
White/Red to "Starter"
Black/Blue to RPM
White to Preheat
Black to Negative
Orange to Pin 5 Oil Pressure
Pink to Pin 3 Engine Temp
Brown/Black to Pin6 Volt Alarm
Red - not connected.

The White is a single wire, not double as the drawing and is 1mm not 2.5mm which is what the Pink preheat wire is on your loom.

The White/Red is 2.5mm whereas the Brown "starter" wire on your loom is 1mm.  Both size mis-matches don't seem right to me as both circuits I think are high current.

The old panel has a diode on the start wire - do I need one or is it replicated in the little black box on your loom?

The engine starts OK but no RPM, the battery indicator shows red, no sounder when the engine is stopped with the strangler, and no sound when the ignition is switched on during the start procedure. The hour meter lights up but I only ran the engine for a couple of minutes so I don't know if it is recording anything.

Any advice would be most welcome. Unfortunately I don't have easy access to a marine electrician where the boat is based.

Regards

Clive Scott

Hi Clive
There are many questions here so lets work through them one at a time, as we solve a problem we move on to the next.
The first problem that you have is that your Dragon panel is not designed to connect to the engine manufacturer's wiring. It is expected that you will connect directly to the specific engine components. 
​Difference between wiring sizes:
Your Dragon panel and the attached wiring is designed for electrical loads that will go through it if used correctly.
The pink wire and brown wire on your new loom are both intended to 'drive' a electronic relay that was supplied with the loom. Only 1 amp is required to drive the relay. The 1.5 mm wire in your loom will carry 15 amps. 
The pink wire has a 70 amp relay - you will need to provide the 70 amp wire that runs from your battery to the relay and then on to the heater plug/s.
​The Brown wire has a 40 amp relay - once more you need to provide the wire that runs from the battery to the relay and then on to the solenoid on your starter motor. 
Please do not try to connect these wires directly by removing the relays.
Once you have these two sorted out we will move on to the next.
Dave