Ramp truck winch??????????

[Andy4639]

I got 2 deep cycle 6 volt batteries. I wired them for 12 volts to run the winch on the ramp truck. I just installed them today so I'm charging them with my 12 volt charger.

My question is how would I wire them to the truck alternator so I can charge them while driving the truck? Also do you think the alternator would even charge them? What do I need to hook it up. I have plenty of cables and I have a blue sea switch that I can mount to turn it off from the system If I need to.
Spec are 48 volts DC max @ 300amps. Shouldn't have any trouble with it.

Right now I have 2 deep cycle 6 volts wired in series to = 12 volts. They are wired to the winch.
If I put a small size cable from the alternator to the cutoff switch then to the + of the first 6 volt battery then ground the 2-6 volt battery to the chassis, that's all I need right?

[Tiger Joe]

Your thinking sounds correct to me. We have an old international backhoe that was 12 volt but originally used 2 6s. We did a one wire alt conversion and just ran that wire to the + of the final battery

[Andy4639]

I think instead of the manual cutoff switch I'll use one of my old golf cart contactor's and have it where I can turn it on/off from inside the truck whenever I need to.
It's good for 400amps which should be plenty.

[lowbucktrucks]

I used a battery isolater When I wired my camper 12v deep cycle battery. It look like a ford starter solenoid, but is rated for contentious duty, seems like it was around $30, and allowed me to separate the batteries when I was camping so I didn't run the truck batteries down. You can wire them where 12v hot from ignition turns them on,or do like I did, and put a lighted switch on the dash (so its harder to screw up and leave them on.)
I've watched your builds with intrerest, Hi from upstate sc, I'm near Chesnee (northeast of Spartanburg)

[Andy4639]

Originally Posted by lowbucktrucks

I used a battery isolater When I wired my camper 12v deep cycle battery. It look like a ford starter solenoid, but is rated for contentious duty, seems like it was around $30, and allowed me to separate the batteries when I was camping so I didn't run the truck batteries down. You can wire them where 12v hot from ignition turns them on,or do like I did, and put a lighted switch on the dash (so its harder to screw up and leave them on.)
I've watched your builds with intrerest, Hi from upstate sc, I'm near Chesnee (northeast of Spartanburg)

Thanks, yes when this contactor opens it will cut the winch off from the truck battery. This will be done by as you stated a 12 volt lighted switch mounted on the dash so if it on it's charging if off it's not.
I may have to replace the alternator also to handle the amps????

Have you joined our Face Book club yet? You need to man we have a good bunch of people locally.

[67_C-30]

I wired the rear battery in series with the battery in front in Brutus and used a 105 amp alternator from a mid 80's IROC and never had a problem. I just it them charge both batteries all the time. I never had a problem with that setup for 10+ years hauling 100's of cars (lots of them with no wheels and tires) in that time. I did use 2 800 CCA batteries. My truck has rear side boxes, so I mounted one in the box right under the winch.

I always pulled cars up on the truck with the engine running.

[Andy4639]

Originally Posted by 67_C-30

I wired the rear battery in series with the battery in front in Brutus and used a 105 amp alternator from a mid 80's IROC and never had a problem. I just it them charge both batteries all the time. I never had a problem with that setup for 10+ years hauling 100's of cars (lots of them with no wheels and tires) in that time. I did use 2 800 CCA batteries. My truck has rear side boxes, so I mounted one in the box right under the winch.

I always pulled cars up on the truck with the engine running.

Thanks this is the kind of info I was looking for.

If I connect a cable between the truck battery and both 6 volt deep batteries with the contactor I pictured I can charge them whenever I need to. I shouldn't need a wire ran from the alternator to the extra batteries they should charge through the truck battery. I can turn the charging off also by flipping the dash mounted switch.

[67_C-30]

Originally Posted by Andy4639

Thanks this is the kind of info I was looking for.

If I connect a cable between the truck battery and both 6 volt deep batteries with the contactor I pictured I can charge them whenever I need to. I shouldn't need a wire ran from the alternator to the extra batteries they should charge through the truck battery. I can turn the charging off also by flipping the dash mounted switch.

Yes, that worked for me, except I didn't have the switch. Knowing my luck, I'd have that switch off by mistake and I'd need to use the winch. 😂

The 383 in my truck was pushing the limits of a pump gas iron headed engine, and it would drag the starter just a little on hot 95+ Degree southern summer days before I put the extra battery in. Never happened again after that. It could help guys with cold weather starting up north too, I'd think.