Everything GA Wire Helper does

The continuity sheet that goes with the harness

The app already knows every wire, both ends, both pins and the gauge. Now it prints the ring-out sheet to go with them — every wire in order, with columns for the measured continuity and isolation readings, a tick box and initials, and a header for the meter make, model, serial and calibration due date.

• Nothing arrives ticked. The app knows what should be connected; it knows nothing about what your meter read. The sheet keeps those two things visibly apart.
• No pass/fail limit is printed. Acceptance limits come from the maintenance manual or the approved data for the installation — the sheet records what was measured, it doesn’t decide what’s acceptable.
• Prepared-by and inspected-by signature blocks, in the same style as the rest of the document set.

Prints on its own, or as part of the complete package with the diagram, parts list and marking checklist.

Diagram editor

• Symbol library for power, protection, switching, loads, units, connectors, grounds and annotation — with style options (diode, Zener, LED…)
• Drag pin to pin to draw a wire; wires fan in to their pins (crow's foot) and route without crossing
• Auto-organize lays a sheet out left to right, source to load; Line up straightens everything onto the grid
• Multiple sheets, with off-sheet arrow tags naming the far end
• Trace highlights everything electrically connected — handy when troubleshooting

Wire numbering, your way

• MIL-W-5088 style: function letter, circuit, segment, gauge — e.g. P8A20
• Airline bundle-wire-gauge style (W123-1234-22), chosen per project
• Reserved 901/9001 ranges when adding to factory wiring, with the factory number shown alongside
• Numbers carry across connectors and splices automatically

Parts library & pinouts

• Build a part once — units, connectors, terminal blocks, studs, splices, wire and cable — and use it on every project
• Paste a pin table straight out of an installation manual or spreadsheet
• Connector face layouts: D-sub, circular and rectangular, printed with the pinout
• Pinouts fill in from the wiring; unit and connector pin tables print with the job

Load analysis

• Continuous and intermittent load per bus
• Breaker and fuse loading, with a warning at 80%
• Wire protection: flags a breaker too big for the wire it feeds
• Alternator margin and voltage drop per circuit, against editable reference tables

Connector finder

Describe the connector you need and the list narrows as you go: how many contacts, what wire size, round or rectangular, bulkhead or panel mount, and what it has to survive — heat, fluids, a firewall. It works down from the published military specifications rather than any one manufacturer’s catalogue, so what comes back is a shortlist of arrangements you can actually buy from several sources.

Families covered include MIL-DTL-38999 (I, II, III), MIL-DTL-5015, MIL-DTL-26482, MIL-DTL-83723, MIL-DTL-22992, MIL-DTL-24308 D-subminiature and the circular arrangements of MIL-STD-1560 / 1651.

Contacts & connectors

Enter a wire size and get the contact size that takes it, what each contact is rated to carry, and which connector shells and arrangements accept it — including the D-subminiature shell sizes and their contact counts. It also shows the derating that applies when a connector is fully loaded, which is the number that catches people out: a contact rated 7.5 A on its own does not carry 7.5 A in a full shell.

Labeling & laser marking

• Wire-number and component-ID labels on Avery sheets or label tape
• Heat-shrink ID sleeves marked by a small GRBL diode laser, driven straight from the app over USB — or export G-code for LaserGRBL
• A batch checklist so a big harness can be marked over several sessions
• Build notes for a low-cost flat-bed marker and the WM-1 feed-through wire marker are in the built-in manual

Crimp tooling

Pick a wire size and the reference tells you which M22520 tool class covers it, what it’s used for, and how to check the tool is still in calibration.

It deliberately doesn’t name positioners or dies. Those belong to the contact you’re crimping, not to the wire — so it points you at the contact manufacturer’s data instead of guessing on your behalf.

The parts list crosses over to GA MX Helper

Send to GA MX Helper on the Parts List. Components arrive with quantities and the reference designators they came from; wire arrives by the foot, and any run with no length recorded is called out rather than quietly counted as zero.

Everything lands as Needed — nothing is taken from stock and nothing is ordered. From the GA MX Helper side, open the aircraft, go to Wiring, and the diagram offers Add parts to a squawk.