I'm afraid it's not that simple. The reason is that ground is switched on the flasher circuits rather than the supply voltage. The only way I can think of to do it would be split the supply voltage into two lines. The first line would go to all of the other flashers and the second line would have the under cab lighting in series and then go to the two ramp flashers.

I was thinking of the additional lighting being wired in series. If the under cab lighting is wired in parallel with the flashers you should be able to add a couple of blocking diodes and get it to work.

I think your best bet is to get a second strip and run two strips - one for each ramp. Other option is to simply cut your strip in half and turn it into two strips half the length - which will still be very bright. I think you could fix this with dioded but I'm not sure Id like that solution very much for myself.

I'm not that familiar with the strips and their brightness, but I trust markmon's opinion and would suggest you try as he suggested since it's less of a hack.

Markmon is correct a second strip is needed. This does not sound like my kit but If you want something custom made to your specs let me know.

Or you could use one of my Smart Color Kits.

https://pinside.com/pinball/forum/topic/arcadeupkeep-introducing-new-smart-color-under-cabinet-kit/page/2#post-1950849

Any color with any flasher, no issues. Plus attract mode lighting, custom in game flash sequences, fading effects and much much more.

The Stern version is through beta testing and will be available shortly!