AEM 30-3532 GM LS 24x Engines Layover - Manual (Page 6)

Rev A, 2013/02/05
Required Wiring
The GM LS Engines 24x Layover Harness comes with a flying lead bundle wired into the PDC. Each of the flying leads
needs to be wired to an appropriate device, or sealed and tied wrapped if not used.
Power and Ground

The Infinity must have an electrically secure ground connection, which means that the battery negative must be
properly grounded to the battery AND the cylinder head grounds muse be properly grounded to the engine. The
ground wires must have perfect electrical conductivity, which means that there must not be any paint or rust under
the wire terminals.

The Battery Negative (10AWG BLK) and Battery Positive (10AWG RED) wires must be extended long enough to
reach the battery without having excess length. A 10AWG or larger gauge wires must be used to make the
extensions.

The 3 Battery Positive (14AWG RED) wires supply power to 3 relays:
1. FPump
2. RadFan1
3. RadFan2
Each 14AWG wire can be extended with a 14AWG or larger gauge wire and connected directly to the battery
positive. Alternatively, the 3 wires can be spliced together with a large enough gauge wire to support the
amperage load of all three devices combined. The amperage load of your Radiator Fans and Fuel Pump is
unique, and the wire gauge selected for your splice must be calculated correctly. Large voltage drops, burned
wire insulation, and fire can occur from using too small of a gauge wire. Reference an American Wire Gauge table
for more details on amperage ratings.

To prevent rust build up, we recommend applying a protective layer of dielectric grease, such as Standard Ignition
SL-4, to the bare metal surface.
Fuel Pump
Run this wire to the fuel pump positive terminal. This wire provides fused/switched power to the fuel pump. A separate
ground wire needs to connect the fuel pump negative terminal to chassis/battery ground.
Radiator Fan 1 Positive
Run this wire to the Radiator Fan 1 positive terminal. This wire provides fused/switched power to the radiator fan. A
separate ground wire needs to connect the radiator fan negative terminal to chassis/battery ground.
Radiator Fan 2 Positive
Run this wire to the Radiator Fan 2 positive terminal. This wire provides fused/switched power to the radiator fan. A
separate ground wire needs to connect the radiator fan negative terminal to chassis/battery ground.