charge

Hey all, this is my first post on here. I bought my 85 BJ73 earlier this year and have made a few minor improvements, the first being a dead stereo that was wired between batteries for 12v. I removed all the previous owners wiring for burnt out off-road lights, XM radio, a CARBINE security...

My battery was tired and not holding a charge so I picked up a new one and replaced it. The truck turns over strong, but will not start. No other changes than the battery. The truck ran fine before the swap. I double checked the wires and everything is connected correctly; what am I missing?

Would anyone happen to know where easy access to constant on 12v might be in an lx570? I mostly drive my vehicle, during the week, 4 miles…then back…daily…which doesn’t charge the battery…which results in weak starts and dead battery after a while. So I trickle charge it once a week or so...

Hi guys! I have a diesel 200 series... it has 2 oem batterys connected in series. I have a trailer with 2 100amp batteries and I would like to charge them with the car, which would be the best alternative? I've read that an isolator doesn´t work properly with these alternators... but I have my...