Good Work boys...
I'm working off the LAH manula from IPDB - No schematics - So this should be verified by Mick - as he has schematics...
On page 32 of the manual - the "Ripper Kickback" has a White/Violet and a Violet/Yellow.. Violet is purple obviously... The thicker one is Purple Yellow..
The thicker wire is the power wire. This should go to the "unbanded" side of the diode on the coil. Check any other coil to confirm..
At this stage - wait for Mick to reply - He can tell you definitely from the schematic.. I would not take "my word on it "