Brand: SPA Design Racing Products
These wiring harnesses are used on electrically-actuated fire systems from SPA, FireBottle, Lifeline, and others. Each harness consists of a 3-conductor cable with a connector plug at one end. The other end of the cable is unterminated (bare wires). Splice two of these harnesses together to connect your power pack to the firing head on your bottle. This also allows you to use one connector type on the bottle and a different connector on the power pack.
Over the years, several different connectors have been used on electrically activated fire bottles and power packs. Use the detailed images in the photo for help with connector identification.
DIN connectors are about 1/2" diameter with 3 pins. FireBottle fire suppression systems currently use the DIN connector.
Hirose connectors are about 3/8" diameter with 4 pins.
Hirschmann connectors are about 1/4" diameter with 3 pins. SPA fire suppression systems currently use the Hirschmann connector.
See the photos of the SPA Design Fire System Power Packs (Part No. 2442) for detailed images of the matching male connectors.