Note: text in square brackets is added for clarity and was not part of the location's name.
Opened on the Ardrossan and Johnstone Railway.This box was east of Stevenston station at the point where the 'new' 1947 spur from the Lanarkshire and Ayrshire Railway met the Ardrossan Railway (allowing closure of the route via Kilwinning East in coming years). The box also controlled the exchange sidings for the Nobel Explosives Works.
It replaced the previous Stevenston No 1 Signal Box [1st] when the new connection was made.
The box was on the south side of the line. It was a slightly brutal flat roofed brick structure. The design was due to this being an Air Raid Protection box, due to the proximity and importance of the Nobel works.
The signal box closed in 1986, replaced by Paisley Signalling Centre.