Vehicle Applications; Jumper Settings; Key Sense Inputs; Latching Input - Directed Electronics 556U Manual

4. Plug the three-pin connector into the 556U module and cut the 556U's antenna wire off. Discard the antenna
ring.
5. Split open the factory transponder ring tube and cut one of the two wires in half.
6. Connect the factory transponder ring side of the cut wire to the BLACK/WHITE normally closed input wire of
the 556U.
7. Connect the factory transceiver module side of the cut wire to the 556U's BLACK wire.
8. Connect the BLACK/RED and BLACK/WHITE wires to the factory transponder ring side of the cut wire.
9. Plug the 6-pin power plug into the control module.
10 Connect the BLACK wire to chassis ground.
11. Connect the RED wire to a fused source of constant 12V.
12. Connect the BLUE wire to the status output (blue wire) of the remote start system that provides a latched
negative (-) ground while the remote start is active.
13. Test unit before reassembling the steering column.
14. Reassemble the steering column shroud.
V V e e h h i i c c l l e e A A p p p p l l i i c c a a t t i i o o n n s s
The 556U works with most RF based immobilizer systems. Refer to DirectWire for specific applications.
J J u u m m p p e e r r S S e e t t t t i i n n g g s s
The 556U is shipped with the jumper set in a 60 winding position (mode 2). For most applications this should
be the optimal setting. Moving the jumper will set the 556U to work off of a 18 winding position (mode 1). You
may use the 18 winding for American and Asian vehicles, but for European vehicles the 60 winding setting is
required. Mode 2 jumper position will be more sensitive to picking up the key vice mode 1 jumper position.
K K e e y y S S e e n n s s e e I I n n p p u u t t s s
Some vehicles require the vehicle never "read" two keys at the same time (Ford Escape, Mazda Tribute). These
vehicles require the key sense wire to be located in the vehicle. This wire will show either ground (-) or positive
(+) voltage when the key is slid in the ignition and the key chime sounds. Depending on the polarity of the
vehicle attach either the GREEN (-) or the VIOLET (+) wire from the 556U to the key sense wire in the vehicle.
When the 556U senses an input on these wires it will drop out immediately allowing the vehicle to only see the
key that was just placed in the ignition cylinder.
L L a a t t c c h h i i n n g g I I n n p p u u t t
Some vehicles require that the key code does not change during a run cycle (Mercedes ML series). By attaching
the PINK wire from the 556U to the ignition wire in the vehicle, the 556U will stay engaged the entire time the
vehicle is running. This includes after the take-over with the key. With the PINK wire of the 556U attached to
the ignition in the vehicle, the 556U will stay engaged until the vehicle is shut off.
© 2004 Directed Electronics, Inc.
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N556U 09/04