If you already have a battery in trailer you should be fine. I doubt that you are really pulling to many amps to kill it that quickly. And even if you are you aren't doing it for 20 -30 mins pulls
Just wire up the trailer battery to charge from the trailer connector this way you will always have a charged trailer battery. If anything add a second battery to the trailer to increase you pull time.
If you do pull a hot lead from the front of the truck you are gonna need some thick cable to keep everything safe. Winch's use alot of amps under load.
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2006 CTS-V
1993 Trooper
1991 Impulse RS
1988 Trooper II SAS
1986 TrooperII (No Rear)
1988 Impulse (dead)
1983 K20
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