alright heres the deal i bought a sunpro boost gauge i hooked the vacuum line like this an ran it to the gauge... the wireing deal is where im bad at so i need sum help as to where to tap the wires to i have a whit wire and a blue.... is where im confused at is these directions.. what is positive dimmer contorls and negative dimmer controls?? anyone.. also it says the blue wire is gound in one example then in the other its positive here take a look at my attachments thanx to anyone that can help..