123ignition 123-TUNE-4-R-V User Manual page 4

WIRING THE 123\TUNE
GB
The 123/TUNE-4-R-V and the 123\TUNE-6-R-V can be used on cars with 'battery-minus'
connected to the body of the car( "NEG-EARTH" ), but also on cars with 'battery-plus' connected to
the body of the car ( "POS-EARTH") .
The 8-cyl. version however ( 123\TUNE-8-R-V ) can only be used on cars, with the 'battery-minus'
connected to the body of the car. ( this is also called 'NEG-EARTH' )
Check the diagrams, at the last pages of this manual, for proper wiring.
The 123\TUNE-8-R-V is layed out for 12 Volt cars only ; the 123\TUNE-4-R-V and the 123\TUNE-6-R-V
can be used on cars with 6 and 12 Volt batteries.
MOUNTING THE 123\TUNE IN YOUR CAR
Check, before removing the old distributor from the car, in which direction the rotor is moving. ( you
can do this, by first removing the wire from the distributor to the coil. Then remove the cap, and ask
some-one to look at the rotor, whilst you activate the start-motor )
Now you know if the rotor rotates clockwise ( CW ) or counterclockwise ( CCW ) seen from the top,
that is. ( put that on a little note, together with the proper ignition sequence )
The next thing : bring the engine to the static timing point, at the end of the compression-stroke, for
cylinder number 1. ( the rotor on the old distributor should point to the cable that connects to the
sparkplug of cylinder number 1 )