600tt Dash

Hi all .
I have a 600tt 2004 model and the dash cuts in and out irrespective of rpm .
Stator and reg rec have recently been replaced .
I was wondering if anyone has an electrical schematic for this model .
I am a sparky so have a fairly good understanding of circuitry .
Otherwise , anyone have a clue why this would happen

 

After further investigation , the headlight ( high/low beam ) relays seem to be causing the dash problems .
My understanding of a relay is , apply voltage to the coil and the contact closes .
Still working through a fix as replacing the relays blew the headlight bulb .
Will see what today brings .

 

Headlight issue fixed ,plugged tune ecu in and cleared all fault codes .
Now when key turned on dash works , push starter and dash goes out while engine starts but dash does not return .
Anyone got any ideas ???