How to hook up and use bump down or up in delay box

Forgot to mention that this could also be switched to a bump up feature.

[Bdawgx]

That’s the same one my grandfather uses in his funny car I’m pretty sure

[jromaineify]

So I noticed you have a mega 450 and msd box, on your mega 450 the trans goes out to your transbrake and pb1 is the button for it, but where would you set the transbrake limit or get the signal from your msd box? Or does the white wire going to your delay box come from your msd, then power comes out of pb1 to your button then solenoid,

[SPEEDKILS]

how do you change bump up to bump down