this is the main wiring harness for Holley Avenger HP or Dominator system
this particular harnesses is for a four barrel TBI all the harnesses are similar
although this may look complicated it's really pretty simple
all the connectors are labeled to tell you what they plug into
these are the two connectors that plug into the ECU this loose wire here which
is red with a white stripe
needs to go to a switch ignition power source this power source must be active
when the key is in the run position
but also importantly in cranking position if your vehicle won't start
first thing to check is to make sure that the source that you connect this
wire to
has power when the engine is cranking this fuse is for the fuel injectors and fuel
pump
this relay is for the fuel injectors in the fuel pump this is a canvas wire
if you're using the optional Holley full-color touch-screen LCD plug into
this port
towards the middle the harnesses what's labeled the input output connector
this is for four inputs in four outputs they're optional
you can do things such as turn an electric fan
you can purchase an optional connector that plugs right into this with the
wires
should you desire next in the harness we find five loose wires
detailed information on how to connect these include in the instruction manuals
but i'll briefly review
black wire is a ground wire that just needs to go to a good chassis ground
doesn't go to the battery just a good solid chassis ground
this red wires a battery power source that feeds the relay
for the fuel injectors and fuel pump this can go to the battery
or a source for constant 12 bolt feed this green wire
is the 12 volt wire that goes to fuel pump if you have a fuel pump that
takes less than 10 amps you can directly use this where the power the
fuel pump
if your fuel pump has over draws over 10 amps than you need to
have this trigger separate relay this yellow wire
is an rpm in point if you're using various distributors
consult the instruction for proper wiring for this finally we have the white
wire
this white where is also used in ignition wiring
and for some applications consult instructions for this as well
next we have a 3-pin connector for knock sensors
Holley offers various adapters to plug into this if using one wire to wire
knock sensor
this 10-pin connector marked
IGN is for ignition Holley offers various adapters to go to different
styles of ignition systems
consult the instruction manual for proper wiring
of the ignition adapter this ten pin connectors for fuel injectors its marked
INJ this plugs directly into the
injector harness that supplied with your kit whether your using
TBI injectors or multiport fuel injection
the following connectors all plug into the various sensors
they're all labeled this one is labeled for fuel
plugs into an optional feel pressure transducer if you want to monitor fuel
pressure
this is labeled
MAP from map thats the map sensor this is labeled
IAC for idle air control motor which is mounted on throttle body
that plugs into that this is labeled TPS for the throttle position sensor
it plugs into the throttle body as well this is labeled MAT for manifold air
temperature
it plugs into the manifold air temperature sensor this is labeled CTS for
coolant temperature sensor
it plugs into the engine coolant temperature sensor and finally we have
what's labeled WB02 that's for the wideband O2
sensor which is located in the exhaust system these all plug and play and once you
simply plug them in your ready to go