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I have the Blue Sea HD 3 way switch, with a Hellroaring isolator. It's also connected to a 3 way toggle so I can select from in cab. Seems to work very well.
CK5
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Electrical help please! Dual Battery setup
- Thread starter Fancy
- Start date
Kain
3/4 ton status
thank you!!
reviving an old thread as there are so many good and relevant products listed here...
as of today (1y8m later)...
anything new out there?
my current setup is super easy but I don't care about isolation.
I have drivers side and passenger side batteries.
passenger side is setup as the normal 1978 truck using all the side terminals.
Top posts go to drivers side battery side terminals.
in parallel, they spin my starter like wildfire. I currently have the wires for both batteries with cheap autozone cables and they are just junk. top post connector broke on one and isn't really tight so not charging the passenger side.
looking at diesel trucks, their batteries are both on the passenger side.
so with this thought...
anyone know of a truck that came or optionally came with dual batteries with one battery on each side? I would like to look for OEM cables to go from drivers to passenger and not use these el cheapo crappy connector cables. I still have to drill out my broken bolt to get my alternator tight. with both batteries hooked up this way and dead make the alternator (stock small one) really work hard and belt slips bad.
as of today (1y8m later)...
anything new out there?
my current setup is super easy but I don't care about isolation.
I have drivers side and passenger side batteries.
passenger side is setup as the normal 1978 truck using all the side terminals.
Top posts go to drivers side battery side terminals.
in parallel, they spin my starter like wildfire. I currently have the wires for both batteries with cheap autozone cables and they are just junk. top post connector broke on one and isn't really tight so not charging the passenger side.
looking at diesel trucks, their batteries are both on the passenger side.
so with this thought...
anyone know of a truck that came or optionally came with dual batteries with one battery on each side? I would like to look for OEM cables to go from drivers to passenger and not use these el cheapo crappy connector cables. I still have to drill out my broken bolt to get my alternator tight. with both batteries hooked up this way and dead make the alternator (stock small one) really work hard and belt slips bad.
Both of my 6.2 diesel powered trucks came factory with dual batteries,one on each side...('82 GMC K2500 & '85 K10 Suburban)..
You may still be able to buy the battery trays from GM or aftermarket sources,or look in salvage yards..
I use welding cable for battery cables,and either buy it by the foot at a place like Tractor Supply or a welding supply store--or whatever I find used at salvage or scrap yards..
I make my own lugs by flattening copper tubing and drilling a hole,and crimp & solder them to the wire with a propane torch..
The battery ends,I just use the clamp on cheap terminals usually,but I found some marine brass ones with a compression fitting to secure the cable,and a stud & wing nut for adding another hot wire or ground on the top, at the flea market,$5 for a box of ten,so I used those on one truck..
You may still be able to buy the battery trays from GM or aftermarket sources,or look in salvage yards..
I use welding cable for battery cables,and either buy it by the foot at a place like Tractor Supply or a welding supply store--or whatever I find used at salvage or scrap yards..
I make my own lugs by flattening copper tubing and drilling a hole,and crimp & solder them to the wire with a propane torch..
The battery ends,I just use the clamp on cheap terminals usually,but I found some marine brass ones with a compression fitting to secure the cable,and a stud & wing nut for adding another hot wire or ground on the top, at the flea market,$5 for a box of ten,so I used those on one truck..
so your two diesels.. go in series right? nothing in between... just ground to pos ?
No,my trucks are 12V...the batteries are wired in parallel ,the positive cable from one battery goes to the positive on the other battery,and both negative terminals are grounded to the frame..so you in effect create one big battery out of both--the amps are doubled,and the reserve capacity,but the voltage stays 12 volts..
It is very important NOT to mess this up,or you'll smoke the entire wiring harness..!
Some military GM diesels had a 24V system and those have the batteries coupled in series to get 24 volts..
It is very important NOT to mess this up,or you'll smoke the entire wiring harness..!
Some military GM diesels had a 24V system and those have the batteries coupled in series to get 24 volts..
yeah I know how series and parallel work... my truck is currently done in parallel...
and yeah my starter gets MANY amps and sounds like its full of redbull and vodka.. hah
Kain
3/4 ton status
Yeah not lookin to spend that kinda cash right now...
