Insights, guides, updates
Blog for project car builders.
Practical guides, expert tips, and product updates to help you design, build, and wire with confidence.

Learn how to label automotive wires with heat-shrink markers, clear IDs, and a wiring loom plan that stays useful for years.

Automotive fuse sizing made simple: choose fuse values for lights, fans, pumps, sockets, chargers, winches, and other 12V circuits.

Automotive relay types explained: SPST, SPDT, 4-pin, 5-pin, changeover, latching, diode, resistor, and solid-state relays.

RapidHarness is powerful harness software, but is it the best fit for a DIY build? Here’s how hobbyists should compare it with X/D Loom.

Choosing between a general diagramming tool and a vehicle-focused wiring tool? Here’s how X/D Loom and SmartDraw compare for real automotive electrical builds.
Take it to the workshop
Get X/D Loom
on iPad.
Sketch looms at the bench with Apple Pencil, and every change syncs straight back to the web.
- Free to download
- Works with Apple Pencil
- Syncs with the web


