3-position plug, 5.00 mm pitch — latch holder keeps the pair mated
The JST 03T-WPJV-2-RM is a 3-position single-row plug from the WPJ series, on a 0.197" (5.00 mm) pitch. The red colour aids visual identification on the harness.
The spec note is clear: Contacts Not Included. The housing ships empty; you need to buy the matching male crimp terminals (JST part number for the WPJ series) and a suitable hand or automatic crimp tool. Factor the terminal cost and tooling into your BOM. The JIS C 0920 Grade Level 7 rating means the mated connector pair can withstand water exposure at a defined level — relevant for outdoor lighting, agricultural equipment, or washdown applications where moisture ingress is a risk.