Measure at the battery with the engine running (typically 13.5–14.4 V).
Current ratings are conservative KK Wiring recommendations for motorsport harnesses bundled inside heatshrink. They are not manufacturer free-air ampacity ratings.
Recommended wire selection is based on:
✓ Conservative current rating
✓ Voltage at Device ≥ 12.5 V
✓ KK Wiring motorsport harness recommendations
✓ Conservative current rating
✓ Voltage at Device ≥ 12.5 V
✓ KK Wiring motorsport harness recommendations
| Device | Max Current (A) | Wire Length (m) | Wire Qty | Wire to Use | Voltage Drop (V) | Voltage at Device (V) |
|---|
How Wire Length Is Calculated
Wire length is the one-way distance from the power source to the device. The calculator automatically accounts for the return path when calculating voltage drop.
