Quoted from GRUMPY:When this relay activates, it powers up all 8 C side solenoids. It can be that the relay is bad, the diode on the relay board is shorted or one of the 8 C side solenoids is shorted.
As far as a IDC punch down tool, I got a very nice tool from Swinks Pinball. It will last a lifetime.
https://www.shapeways.com/product/XACSFLRSE/idc-156f-crimping-handle-pinball-tool?optionId=56016634&li=shops
https://www.shapeways.com/product/PSCPEYT2J/idc-100-156f-wire-inserter-pinball-tool?optionId=65050666&li=shops
cheers mate
I also offer a different hand for the idc wire inserter which doubles as a flipper button nut tool
https://www.shapeways.com/marketplace?type=product&q=swinksidc