This sounds like a good place for me to join the convo. I'll be visiting my old vollie FD in KY in about a month and a half, and while I'm home, I'm upgrading them from a Twinsonic to a Whelen 9M Edge. They purchased two full size bars and one mini bar.
The bar I plan on installing on the mini-pumper is a six strobe bar, consisting of four corners and two 400 series strobes facing to the front. I plan on upgrading it with a pair of flashers to the front and depending on my next question, possibly two more 400 series strobes.
I've never messed with 9M strobe bars, just the same frame that are Freedoms. I'm assuming 9M4s denotes it's a four strobe power supply only. If that's the case, that means I should have a second power supply running the 400 series strobes with two more open outlets.
So, my question is, is the 9M4S the only power supply that was put in a 9M Edge bar? If so, is it only a four outlet and what's the power output? One reason I'm curious is the UB12 thread I saw in conjunction with this thread. Didn't know if it was for a different style of bar or not. Another question is if I just have to insert the 400 strobes, will I need wiring to reach the power supply or a board with molex connectors?
Depending on what I find out, if I need, I can probably part out the mini bar's power supply if needed, as it wasn't fully assembled (missing some lenses, endcaps and mounts). I don't know if it had any 400 series strobes, so I may have to find those on my own.