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CrewcabBass918

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  1. Tonasty U know the complicated mess that is upgrading electrical on this truck! Thanks for chiming in. Ill try the headlight trick. Good call on the load test, those batts arnt spring chickens so o could have a bad one and this new bigger amp is making it show its self.
  2. I dont believe they are agm just good ole basic lead acid i believe. No diesel its a 1/2 ton. But the 07-13 has a voltage sensor so you are not supposed to do big 3 as the ecu monitors alt output through that sensor and adjust as needed for economy. Dumb imo! This is per mechman. However when the alt was installed per there i structions it would not charge properly so i put the factory ground to frame and mktor back with upgraded 2/0 from alt to batt. That fixed that issue but i plan to upgrade those factory grounds so basically perform big 3. Its a mess of an explanation. Yes 1 run of 2/0 to rear for sub amp and one run of 4gauge for 4 channel however i want to do a 2nd run of 2/0 if i do xp3000 in rear and the dual off that to the bass amp.
  3. I have an 08 sierra with dual batts under hood. With new amp (sundown scv2000) im getting voltage drop especially turned up at idle, sitting still at stop light. Both batts under hood are Duracell 65ah each wirred in parrel. With a mechman ho 270. Im not sure if i should replace those with xs power d3400s or add a xp3000 to the rear. Which do yo reccomend and why? Thanks guys!
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