New Features: September 10, 2026

The features announced with this release. Screenshots and menu names are shown as they were at the time. See the Version History for every release.

Splice Cavities Added

Splices can now have cavities, just like connectors. Use them when your splice has a physical housing with defined wire positions, so you can document exactly which wire lands in which position.

Cavities are optional for splices- if your splice doesn't have them, nothing changes and wires connect to the splice body as they always have.

In the Splice design, type a range to add cavities all at once (for example `1-5`, `a-e`, or `11,12,13`), then rename or delete them individually.

Access via: Splice > Assembly tab

Splice Cavities Added

Splice cavities appear in the Design Assembly tree alongside connector cavities, with their own icons.

Splice Cavities Added

Connect Wires Directly to a Splice Cavity

When you build a connection to a splice, a Cavity dropdown now appears just like it does for connectors. Pick a defined cavity, type a custom one, or leave it on (No Cavity) to connect to the splice itself.

Selecting a splice now defaults the dropdown to the (no cavity) option, so your existing workflow is unchanged until you actually want a cavity.

Splice cavity callouts flow through to your Connection Tables, Wiring Tables, and outputs the same way connector cavities do.

Access via: Connections tab > Create New Connection

Connect Wires Directly to a Splice Cavity

Wire Insertion Depth on Connectors

Connectors now carry a Wire Insertion Depth - the length of wire inserted into the connector. This is specified on the Connector design on each individual cavity, and automatically feeds into every connection length calculation in your harnesses.

Insertion Depth is a connector-only property. Ferrules, terminals, and splices do not add length at their endpoint.

Access via: Connector design > Assembly tab > Wire Insertion Depth

Wire Insertion Depth on Connectors

Wire Entry Length on Backshells

Backshells now have a Wire Entry Length - the length of wire inside the backshell. When a connection passes through one or more backshells, their entry lengths are summed and added to the total connection length automatically.

Access via: Backshell design > Assembly tab > Wire Entry Length

Wire Entry Length on Backshells

Rebuilt Edit Lengths Dialog

The Edit Lengths dialog has been expanded to show every input that goes into a connection's length, not just the final number.

New columns for From/To Insertion Depth and From/To Entry Length sit alongside the existing Strip Length and Length columns, so you can see the full breakdown for every connection in one place.

You can now:

  • Override or reset any value - double-click or right-click a cell to edit it. Overridden values are visually marked, and the tooltip shows you the original calculated value.
  • Edit multiple connections at once - select several rows and override or reset them in a single action.
  • Search and filter connections to find the ones you need in large harnesses.
  • Set an Extra Length per Connection and a Default Loopback Length for the whole drawing.

Access via: Edit Lengths in the Tools ribbon

Rebuilt Edit Lengths Dialog

How Lengths Are Calculated

A new How Lengths Are Calculated reference dialog explains exactly how RapidHarness builds a connection length, with a labeled diagram of every segment:

Total Length = Connector Insertion Depth + Backshell Entry Length + Sum of Bundle Lengths + Backshell Entry Length + Connector Insertion Depth + Extra Length

It also spells out the rules that trip people up most often - that Strip Lengths fall within the Insertion Depth and are never added to the total, that loopbacks use the Default Loopback Length instead of the bundle lengths, and that overriding the entire Length ignores all calculations.

Access via: Edit Lengths dialog

How Lengths Are Calculated

Length Columns in Your Tables and Outputs

Insertion Depth and Entry Length are now available as columns in your:

  • Connection Table on the Top Level drawing
  • Wiring Table tabular output
  • Connections tabular output
  • Cut List tabular output

Add them the same way you add any other column, so your manufacturing documentation can carry the full wire prep spec.

Length Columns in Your Tables and Outputs

Locate in Top Level from the Rule Checker

The Rule Checker results now include a Locate in Top Level action. Click any violation and RapidHarness pans and zooms your Top Level drawing straight to the offending item and selects it - no more hunting through a large harness to find what a rule is complaining about.

Violations can now also list the specific items involved, so you can jump directly to any one of them.

Access via: Rule Checker tab

Locate in Top Level from the Rule Checker

Additional Improvements

  • Copy Reference Designator - the Copy menu in the Design Assembly now includes the Reference Designator alongside Part Number, Manufacturer, Description, and Internal Part Number. Fields with nothing in them are greyed out.
  • Cavity name validation - cavity names are now validated as you type in both connectors and splices. Blank names, duplicates, and names containing a period are caught immediately with a clear message, rather than causing problems later in your outputs.
  • Remap Connections supports splices - when you swap a splice for a different design, the Remap Connections dialog now lets you map its cavities across just like it does for connectors.
  • Pigtail connectors - insertion depth is not applicable to pigtail connectors and is disabled automatically, with a clear message explaining why.
  • Recycle Bin restore fix - restoring a design version now works correctly even if the design has been moved to a different folder since it was deleted.
  • Stability - fixed crashes caused by display changes (sleep/wake, docking, and RDP reconnects) and by closing a dialog in the middle of a drag and drop.

← March 11, 2026 October 9, 2026 →

Further Questions?

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