Chris, if you have blue/brown on the ballast pack and the ends are the same on the cap ends then just go blue,blue, and brown,brown. If not pair the ballast pack colours with the same colours on the cap ends, so they form a matched pair. Hope that makes sense, if not let me know the make of the ballast pack and I will get back to you, but if you match the colours betweeen the caps on each end you will be good, regards Colin. Have a look at this sketch.
Wiring Diagram for Single Tube.
Below is the wiring diagram for a single lamp rapid or trigger start ballast. The color coding is fairly common.
Wiring Diagram for Single Tube Rapid or Trigger Start Ballast
Below is the wiring diagram for a twin lamp rapid or trigger start ballast. The color coding is fairly common.
Power Switch +--------------------------+
Line 1 (H) o----/ ----------|Black Dual Tube Red|-----------+
Line 2 (N) o----------------|White Rapid Red|--------+ |
+-----|Yellow Start Blue|-----+ | |
| +--|Yellow Ballast Blue|--+ | | |
| | +-------------+------------+ | | | |
| | | | | | |
| | Grounded | Reflector | | | |
| | ----------+---------- | | | |
| | .----------------------. | | | |
| +----|- Fluorescent -|----+ | | |
| | | ) Tube 1 ( | | | |
+-------|- bipin -|-------+ | |
| | '----------------------' | |
| | .----------------------. | |
| +----|- Fluorescent -|----------+ |
| | ) Tube 2 ( | |
+-------|- bipin -|-------------+
'----------------------'