Figure 1: Electrical Cables at the Rear of the Engine Compartment
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The main harness passes under and across the engine to these items:
) Alternator.
) Starter.

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AIRCRAFT AMM
Manifold Pressure Connector
LYCOM ING LYCOMING
LASAR Connector
Starter Cable EGT and CHT In-Line Connectors
Fuel Pressure Fuel Flow
Connector Connector

Figure 2: Electrical Cables on the Left Side of the Engine compartment
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AMM AIRCRAFT
Engine Ground 
Ground Plate  Alternator Connections  Alternator Ground 
EGT and CHT In-Line Connectors  P-Clamp 
Figure 3: Electrical Cables on the Right Side of the Engine Compartment 

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% Section 71-51 % Electrical Cables in the Engine Compartment - TAE 125 Diesel Engine % % 1. General
% The engine compartment has a main electrical wiring harness. It is supplied as part of the engine % installation. The harness has all of the low-power cables for the engine control system. It is integral % with the engine control system. Refer to Section 76-01 for data about the main electrical wiring % harness.
% There are a small number of separate cables for the alternator and starter. See Chapter 24 for data % about the battery and alternator wiring. See Chapter 80 for more data about the starter cables. See % Chapter 92 wiring diagrams for data about the cables in each system.
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Section 71-60 % Air Intakes - Lycoming Engine
1. General
An alternate air valve assembly, air filter housing and air filter make the engine air intake system for the DA 40 Airplane. The engine bottom cowling has a molded air intake duct and a flexible seal attached to the air filter housing makes the joint between the engine cowling and the engine intake. Figure 1 shows the engine air filter and alternate air intake.
2. Description
The air intake has 3 main parts:
) Alternate air valve assembly.
) Air filter housing.
) Air filter.
A. Alternate Air Valve Assembly
The alternate air valve assembly has a valve body which has 6 air inlet holes around its circumference. A Bowden cable attaches to the valve body and rotates the valve body inside the valve flange. O-ring seals locates at each end of the valve body to make a seal between the valve body and the valve flange.
The valve flange has 6 air inlet holes drilled around its circumference. A suction sleeve locates inside the valve flange and passes through the center of the alternate air valve assembly.
B. Air Filter Housing
The air filter housing has a flexible seal which makes a seal between the air intake assembly and the engine bottom cowling. The flexible seal attaches to the air filter housing with bolts. Bolts with spacers attach both the air filter housing and the alternate air valve to the fuel injector. One of the spacers has a support bracket for the Bowden cable.
C. Air Filter
The air filter has a paper type element. The air filter locates on the air filter housing and is held by a worm-drive clamp.
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O-Rings
Suction Sleeve
Flange 
Operating Cable 
Spacer  ALTERNATE AIR VALVE 
Valve Body  EXPLODED VIEW 

Fuel Injector
Usual Air Inlet Alternate Air Inlets (6)
ALTERNATE AIR VALVE ASSEMBLY
Worm-Drive Air Filter Clamp
Air Filter Housing (Cut Away)
　
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