1655 diesel electrical basics?

[sellener777]

Got a 1655, that runs well as far as I can tell. Lights are shabby and was thinking about rewiring. Looking into it it seems I have two 12 volt batteries. They are both grounded to frame, and connected to each their via the positive terminals. Then you have one hot cable from one battery (left side battery) going to starter.

Is this standard? Is this direct/parallel?

I assume this is a 24 volt system based on setup. How does that effect stuff downstreamlights/fuses/starter?

Benefits/downsides to this setup?

Can a wiring harness from Korves work on this 24 volt system or I gotta buy individual wires of correct gauge?

Thanks, I know a little, but not much.

 

[sellener777]

So after thinking more.it would appear what I m describing is a system wired in parralel?

Voltage stays 12 volt, but amperage is more?

If this is correct any gotchas for this setup?

Grounded two frame on both vs wiring together then one ground ok or standard kinda practice?

Thanks!

 

[scootergmc]

Your tractor was originally two 6v batteries wired in series to become 12v. I'm sure someone has converted it to 12v parallel. My 1655 had one 12v group 31 battery.

http://www.partsforolivers.com/1650_dsl.pdf

 

[gary66]

if one of the negative terminals is connected to the positive of the other you have 24v. The positive on the other would feed
the source, the negative of the same battery would be the ground.

both positives and negatives connected, or in your case connect by the frame is 12v. with more amps.

>>There will be 12 volts (about 14.2 volts with an alternator) if the batteries aren't wired together but kept isolated from
each other. You can have two separate harnesses or use a battery isolator or selector switch.
There will be 12 volts if the batteries are wired together in parallel: positive terminal to positive terminal, and negative to
negative. Amp output will be the sum of the multiple batteries wired this way.
There will be 24 volts (about 28 volts with an alternator) if two 12-volt batteries are wired together in series: Connect the
positive terminal of one battery to the negative terminal of the other battery. Voltage doubles, but amps stay the same.<<



At times I think we all wish we had 2 batteries . Check the output to be sure...maybe you have an early hybrid lol

 

[TLR1655]

Each negative terminal should be grounded separately. Battery cable gauge is very important since two 12volt batteries in parallel will give you more amps and therefore more watts of power. But your original starter can only draw so many amps and therefore you don't get that much more of an advantage in starting. I converted both my 1655 and 1755 back to 6volt batteries hooked up in a series when i bought them because that method gives me more reserve capacity. My cold cranking amp minutes are twice as long (which is great on cold days when you need to use the glow plugs) as they would have been with equivalent amp 12volt batteries hooked up in parallel. Both tractors now start easily.