12V Battery Sense

1. Prepare

Verify component pinouts against each manufacturer’s datasheet before wiring. Label cut wires with their wire numbers; the same numbers follow them through every stage. Wire colors are written out for black-and-white printing. Custom colors can be named in the wire library.

Progress is saved on this browser for this board revision. Changes to the board or measurements start a new checklist. Printed diagrams are references, not life-size templates.

9 wires to prepare; 217mm total wire, including end allowances.

Parts List

6 unique parts

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2. Cut wires

9 wires · +5mm per end for lead-through

Total wire: 217mm (8.5in)

3. Bend wires

Use the straight-line ruler to mark bend points on the wire before bending. Use the bent shape as a visual reference while bending.

Wire 1 — 12V — E7 → E5 — 15mm — Red

Cut 15mm.

Wire 2 — TAP — E13 → E15 — 15mm — Yellow

Cut 15mm.

Wire 3 — TAP — F12 → J12 — 20mm — White

Cut 20mm.

Wire 4 — TAP — K13 → L20 — 30mm — Green

Cut 30mm. Bend 90° right at 23mm.

Wire 5 — TAP — M21 → H23 — 28mm — Blue

Cut 28mm. Bend 90° down at 18mm.

Wire 6 — GND — E21 → G23 — 17mm — Black

Cut 17mm.

Wire 7 — GND — F20 → J15 — 33mm — Red

Cut 33mm. Bend 90° right at 18mm.

Wire 8 — GND — K14 → L16 — 18mm — Yellow

Cut 18mm. Bend 90° right at 10mm.

Wire 9 — GND — I14 → F5 — 40mm — White

Cut 40mm. Bend 90° left at 28mm.

4. Place wires

Component side. Select a wire to emphasize its route in its own color and highlight its endpoints. Wires follow number order, matching the bend guide and solder checklist.

5. Solder connections

Bottom view: horizontally mirrored. Coordinate names still identify the same physical holes. Highlights mark wire endpoints; wire routes belong on the component side. Check each connection and the listed solder bridges.

Board is horizontally mirrored. Column A is on the right.