"James Sweet" wrote in message
news:Hwqzd.15673$rL3.9038@trnddc03...

| This is a mercury lamp, they don't use igniters. Only HPS, modern
| pulse-start metal halide and some modern LPS lights use an igniter.
Mercury
| vapor lamps are all probe-start and rely only on sufficient open circuit
| voltage from the ballast.
|
| Also his lamp is igniting so even if it did use an igniter that's not the
| problem, if the igniter fails in a pulse-start fixture the lamp will never
| light.

He may have mis-identified the lamp type.

N