Because the Viper (not Pro) is a POS and the an Insight is 10 times the monitor that Viper ever will be that's why LOL! But seriously, I like product control with an Insight. I did not add any switches, the Ag Leader integrates into the original switches and wiring directly through the FACTORY plug on the A post, spraying operations work exactly as before as far as the spray rig controls are concerned. I just can't seem to get the Raven out of the way even by bypassing the Accuboom controller on the boom. No AIM on this rig. Kinda bum fuzzled over it but it's working great the way I've got it even if it's not a typical install, one perk is that when it's time to trade I can have it back to Viper control and all my AL stuff out in about 30 minutes if I need to.