STEP 4: Finish the wiring
UK
Connect the black wire to the negative terminal of the ignition coil, according to the schematic.
Connect the spark plug leads in the proper sequence to the cap, starting with the wire for the number
one cylinder at the position pointed to by the rotor of the '123'.
Also connect the high voltage wire from the coil to the center position of the cap. Attach the cap to
the distributor. Route the red and black wire well away from the high voltage leads and away from
moving parts, using tie-wraps or other suitable means.
Connect the vacuum-tube ( if there is one ) from the carburetor to the nipple on the '123'. Older
engines may have a screw-connection for the vacuum-advance diaphragm. In this case you can use a
short length of rubber hose to connect to the 123, or remove the hard line to the carburetor and
replace it completely with thick-walled rubber vacuum-hose.
STEP 5: Start and test drive
You can now start your engine. If you have worked accurately, your ignition should be adjusted well
enough for a test drive. To achieve ultimate accuracy a fine adjustment using a stroboscope should be
performed. ( check the dynamic timing data in 'technical data' )
Best practice is to verify the maximum advance for your engine ( with disconnected vacuum ), as this
gives the most accurate reading and ensures you at the same time, that high speed knocking will not
occur.
Enjoy your 123ignition!