Haltech E6A - Manual (Page 114)

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Many distributors used in electronic ignition systems contain internal components and layouts
the same as the distributor described above, but are fitted with mechanical and/or vacuum
advance mechanisms which are much less effective and flexible than electronic timing as in the
E6A. If these mechanisms can be defeated or removed, and the timing edges set correctly, then
they can successfully be used to trigger the E6.
A third type of pickup, the magnetic reluctor, is used in distributors as well as on crank trigger
units. It is possible to use this type of trigger on the E6A, but a signal conditioner is needed to
convert the signal into the square wave required to trigger the E6A. Haltech can supply such a
conditioner called a Reluctor Adapter, and coded RA3. The RA3 has two input channels, a
Primary input and a Secondary input. The Primary input is used for the main trigger, and the
secondary is used for the Home or Road Speed input. The RA3 plugs directly into the input
trigger connector on the main harness.
FRONT VIEW
INPUT Input plug
OUTPUT Output plug
INPUT PLUG OUTPUT PLUG
Pin Colour Wire Function Pin Colour Wire Function
A BLUE Primary Trigger (-) A BLACK Ground
B WHITE Primary Trigger (+) B RED +12 Volts
C GREEN Secondary Trigger (+) C YELLOW Primary Trig
D GREY Secondary Trigger (-) D BROWN Secondary Trig
Figure E.4
The magnetic pickup is basically a piece of wire wrapped around a magnetic core and attached
to the sensor face, which is called the pole piece. The physical size and shape of such a pickup
can take many forms. This type of pickup has either two wires (one positive ( + ), and the
other negative ( - )), or three wires with the third being a shield. The wires are sometimes
marked as such, but more often than not they are unmarked.
It is very important that the positive pin go to the input pin of the reluctor adapter (pin
B for Primary trigger, pin C for Secondary trigger), and that the negative go to the
ground reference pin (pin A for Primary trigger, pin D for Secondary trigger).
If you cannot tell which wire is the positive from markings or wire colour, then it would be
necessary to check the signal going into the reluctor adapter using an oscilloscope.
A B
D C
D C
A B