Modular Wiring

Synthesis

A modular harness flow requires the synthesis of wiring to implement all possible combinations of features in the vehicle but without the definition of harness levels. It considers only abstract wiring and does not consider physical harness levels. Modular Wiring Synthesis (MWS) generates this wiring by routing wiring based on manufacturable configurations of exclusive options. You can then use Composite Wiring Synthesis (CWS) to assign this wiring to physical harness levels.

In contrast to Composite Wiring Synthesis, Modular Wiring Synthesis does not consider all combinations of options. However, it does take into account mutually exclusive content, both in the case of:

• Options defined as mutually exclusive

• Inverted option expressions (for example, A and !A)

For example:

If LHD and RHD are NOT defined as exclusive, MWS could synthesize the following unnecessary wire:

Figure 181: Unnecessary Wire

In comparison, if LHD and RHD are correctly defined as exclusive, MWS does not synthesize that wire:

Figure 182: No Unnecessary Wire

When you run Modular Wiring Synthesis, it performs the following steps:

1. Creates or re-uses a level on each harness for each vehicle model.

2. Creates or re-uses wiring for each vehicle model based on the patterns of options permitted for the vehicle model.

3. Allocates option expressions and module codes to the synthesized wiring.

4. Promotes options affecting a harness to the harness.

• Synthesizing Modular Wiring

• Viewing the Synthesized Wires for all Levels of a Harness after Modular Wiring Synthesis

• Viewing the Synthesized Wires for a Harness Level after Modular Wiring Synthesis

• Viewing the Synthesized Wires for all Harnesses after Modular Wiring Synthesis

• Viewing the Synthesized Wires for all Harnesses in a Vehicle Model after Modular Wiring Synthesis

• Reporting on Missing or Inconsistent Options Promoted to Harnesses

• Splice Exclusive Wires

• Option Expressions for Negated Options

Parent Topic:

Wiring

Capital Systems Integrator User Guide, 2512.2606

Unpublished work. © 2026 Siemens