Lights flicker and gauge jumps around???

@67Dart273
I have this "flickering problem " since I installed a MSD RTR Distributor.... therefore I removed the BR ..then I connected the BLUE and the BROWN wire together... and bought a 30 amp Relais... now the relais is "switched on " by the blue /brown wires...
and feeds the MSD RTR Dizzy with full 12 V+ coming from the battery...
Sadly the setup creats this flickering of the lights...and the jumping on the Voltmeter..
If I use my OEM setup.... IGN BOX ( Chrome ) BR and Accel OEM Replacement Distributor....
Everything is fine....no flickering...nothing just 14.5 Volts stable...

Greetings Juergen