16
ECM CONNECTION
In some race applications, you may want to have components
controlled with either a toggle or rocker switch AND an aftermarket
ECM (Engine Control Module). If this is the case, the Track Rocker is
designed to allow BOTH a grounding switch and an aftermarket ECM
to ground the 85(-) terminal on the coil inside of the relay. This is
commonly referred to as “sinking the relay to ground.” All the relays
in the Track Rocker are ‘diode suppressed,” therefore; it is CRITICAL
the 85(-) terminal is ONLY used as ground control.
This redundancy allows you to manually operate components,
like the cooling fans, while still allowing them to function automatically
as programmed into a microcontroller. Most aftermarket ECM’s can
be tied into the Track Rocker System. To do so simply splice the
appropriate grounding output wire(s) from the ECM into the Switch
Control Pigtail wires.
Doing this allows either the switch or the ECM to complete the
circuit within the relay and activate the relay’s output wire. This will
also illuminate the lighted switches to illuminate whether the
component was activated manually by the switch or automatically by
the computer, thus signaling the driver anytime the component is
active.
Summary of Contents for Track Rocker series
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