I just puchased a set of new EMG Jazz pickups from a Tber that came with the plug in wire which has a red and white wire connected to the end. I 'd like to installed them in a Yamaha bb605 with the existing preamp. It is vol/blend/bass/treble/sweepable mids activated with a toggle switch only. Can I use this preamp or do I have to go vol/vol? And whatever the case how would I go about it? All you can provide will be appreciated. Thanks. GOD bless you!