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+--- Thread: Joining 25mm 170 AMP Battery Cable (/showthread.php?tid=24802)
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Joining 25mm 170 AMP Battery Cable - silverzx - 24-06-2014
So I've got my cable, circuit breaker, terminal clamps and cut off switch for the Datsun.
How can I join the existing live to my cable safely?
I kind of want a clamp like on the terminal clamp but just for joining wires.
I've typed a few things into eBay/Google but can't find what I'm looking for..
Heavy duty crimps?
Any suggestions?
RE: Joining 25mm 170 AMP Battery Cable - WiNgNuTz - 24-06-2014
Electrical tape?
RE: Joining 25mm 170 AMP Battery Cable - Matt - 24-06-2014
Twist together
Job jobbed
RE: Joining 25mm 170 AMP Battery Cable - Toms306 - 24-06-2014
Scotch lock and clingfilm....
RE: Joining 25mm 170 AMP Battery Cable - Grant - 24-06-2014
Get appropriately sized crimps. Crush them with a vice (unless you have hands like the hulk
) and then slap some solder around the wire to the crimp. Belt and braces 
RE: Joining 25mm 170 AMP Battery Cable - zx_volcane - 24-06-2014
yeah solder the ends into big ass connectors and use a distribution block
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 24-06-2014
Distribution block was the words I was looking for.
RE: Joining 25mm 170 AMP Battery Cable - zx_volcane - 24-06-2014
or bolt them together if you're feeling cheap and cover in electrical tape
RE: Joining 25mm 170 AMP Battery Cable - Eeyore - 24-06-2014
(24-06-2014, 12:47 PM)silverzx Wrote: Distribution block was the words I was looking for.
It took me a while to work out those words too! They seem to cost more than you would expect!
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 24-06-2014
(24-06-2014, 01:01 PM)SRowell Wrote:(24-06-2014, 12:47 PM)silverzx Wrote: Distribution block was the words I was looking for.
It took me a while to work out those words too! They seem to cost more than you would expect!
Proper job seem to do them dirt cheap.
And pocket size... If thats your thing...
RE: Joining 25mm 170 AMP Battery Cable - cully - 24-06-2014
you need Copper Tube Butt Connectors for cable Size 25 mm² and a good crimper dont expect to do them with plyers
http://www.ebay.co.uk/itm/Copper-Tube-Butt-Connectors-Pack-of-25-Cable-Size-25-mm-/330643842503?pt=LH_DefaultDomain_3&hash=item4cfbe8a5c7
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 24-06-2014
(24-06-2014, 01:14 PM)cully Wrote: you need Copper Tube Butt Connectors for cable Size 25 mm² and a good crimper dont expect to do them with plyers
http://www.ebay.co.uk/itm/Copper-Tube-Butt-Connectors-Pack-of-25-Cable-Size-25-mm-/330643842503?pt=LH_DefaultDomain_3&hash=item4cfbe8a5c7
Thanks Cully, best get some tape too, don't want those big chunks of metal being exposed!
Edit: Less and cheaper:
www.ebay.co.uk/itm/261060050738 x 6 £3.29
![[Image: %24T2eC16hHJHIE9nysfqDLBP9VkwkvJg~~60_12.JPG]](http://i.ebayimg.com/00/s/MzA0WDMzMQ==/%24T2eC16hHJHIE9nysfqDLBP9VkwkvJg~~60_12.JPG)
www.ebay.co.uk/itm/251101053397 x 10 £4.59
![[Image: %24T2eC16dHJGIE9nnWrdEFBP9VjyBwE!~~60_12.JPG]](http://i.ebayimg.com/00/s/MzA0WDMzMQ==/%24T2eC16dHJGIE9nnWrdEFBP9VjyBwE!~~60_12.JPG)
Or if you fancy a free torch...
www.ebay.co.uk/itm/320997880550 x 25 £8.73
![[Image: %24(KGrHqZ,!pYF!0CEjK5tBQcrfgP(+Q~~60_12.JPG]](http://i.ebayimg.com/00/s/NTAwWDUwMA==/%24(KGrHqZ,!pYF!0CEjK5tBQcrfgP(+Q~~60_12.JPG)
RE: Joining 25mm 170 AMP Battery Cable - Ruan - 25-06-2014
Don't expect to do the ground with just connecting it to the chassis - seen it, tried it, never works, engine will crank insanely slow.
You *need* to run a +ve and -ve cable from my experience.
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 25-06-2014
(25-06-2014, 08:28 AM)Ruan Wrote: Don't expect to do the ground with just connecting it to the chassis - seen it, tried it, never works, engine will crank insanely slow.
You *need* to run a +ve and -ve cable from my experience.
That's how it's been for the last year and not had a problem bro-ski.
RE: Joining 25mm 170 AMP Battery Cable - toseland - 25-06-2014
and its almost guaranteed to be better if you have a dedicated negative connection from engine to battery
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 25-06-2014
(25-06-2014, 10:18 AM)toseland Wrote: and its almost guaranteed to be better if you have a dedicated negative connection from engine to battery
I'll have a looksie!
RE: Joining 25mm 170 AMP Battery Cable - toseland - 25-06-2014
well, quickest test, grab a jump lead. clip it onto the starter mount, and 'tother end onto battery.. if it improves, you are onto a winner..
i have a 600amp cable running from negative terminal to the top of the alternator bracket (one that bolts on by the fuel pump)..
that, and tightened the dedicated one on the back of the engine and it starts like a boss now
Joining 25mm 170 AMP Battery Cable - Sambarker - 25-06-2014
Or maybe get one of these?
[attachment=17148]
And some decent crimp on ring terminals?
(25-06-2014, 08:28 AM)Ruan Wrote: Don't expect to do the ground with just connecting it to the chassis - seen it, tried it, never works, engine will crank insanely slow.
You *need* to run a +ve and -ve cable from my experience.
But surely if battery has a good ground to chassis, and engine has a good ground to chassis then there should be no problem? Never had an issue tbh.
RE: Joining 25mm 170 AMP Battery Cable - Niall - 25-06-2014
(25-06-2014, 04:40 PM)Sambarker Wrote: But surely if battery has a good ground to chassis, and engine has a good ground to chassis then there should be no problem? Never had an issue tbh.
Correct you are sir. People get slower cranking cars when they relocate the battery because of two reasons. Either their short earth strap is not on a clean enough surface (does need to be bare metal!) or the ring connector they have used isn't big enough or they haven't factored voltage drop when sizing their + cable.
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 26-06-2014
(25-06-2014, 04:40 PM)Sambarker Wrote: Or maybe get one of these?
And some decent crimp on ring terminals?
(25-06-2014, 08:28 AM)Ruan Wrote: Don't expect to do the ground with just connecting it to the chassis - seen it, tried it, never works, engine will crank insanely slow.
You *need* to run a +ve and -ve cable from my experience.
But surely if battery has a good ground to chassis, and engine has a good ground to chassis then there should be no problem? Never had an issue tbh.
I already have one of those, plus a circuit breaker, plus cable.
Joining 25mm 170 AMP Battery Cable - Sambarker - 26-06-2014
(26-06-2014, 08:36 AM)silverzx Wrote:(25-06-2014, 04:40 PM)Sambarker Wrote: Or maybe get one of these?
And some decent crimp on ring terminals?
(25-06-2014, 08:28 AM)Ruan Wrote: Don't expect to do the ground with just connecting it to the chassis - seen it, tried it, never works, engine will crank insanely slow.
You *need* to run a +ve and -ve cable from my experience.
But surely if battery has a good ground to chassis, and engine has a good ground to chassis then there should be no problem? Never had an issue tbh.
I already have one of those, plus a circuit breaker, plus cable.
Well all that lot isn't going to help issues as it will all be adding resisitance
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 26-06-2014
I don't see why some people are so negative about it? It'll be fineeee!
It's just a simple relocate battery from behind passenger seat, where it currently has a cut of switch wired to the positive(+) and the negative(-) straight to the floor pan to the boot where it will have an added circuit breaker and another 1.5m of cable.
Happy dayssss!
RE: Joining 25mm 170 AMP Battery Cable - Poodle - 27-06-2014
I hear Dum-dum's a huge fan of those copper butt connectors, snigger snigger....
RE: Joining 25mm 170 AMP Battery Cable - puglove - 28-06-2014
(24-06-2014, 12:14 PM)Matt Wrote: Twist together
Job jobbed
Im going with this method
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 30-07-2014
So I have my 25mm cable, I have the big crimpy things, how do I join them together?
Crush them with a vice?
Do I need a beefy soldering iron? Any suggestions, links to eBay products etc all considered helpful.
Here's the connectors I bought:
RE: Joining 25mm 170 AMP Battery Cable - cully - 30-07-2014
you need a heavy duty crimper for 25mm lugs
or you could solder the cables in
[attachment=18030]
this is cheap compared to what i paid for mine
http://www.ebay.co.uk/itm/Heavy-Duty-Crimp-Tool-Cable-Lug-Crimper-for-Copper-Tube-Terminals-6-50mm2-/181477847642?pt=UK_Hand_Tools_Equipment&hash=item2a40ec325a
RE: Joining 25mm 170 AMP Battery Cable - silverzx - 30-07-2014
(30-07-2014, 10:53 AM)cully Wrote: you need a heavy duty crimper for 25mm lugs
or you could solder the cables in
this is cheap compared to what i paid for mine
http://www.ebay.co.uk/itm/Heavy-Duty-Crimp-Tool-Cable-Lug-Crimper-for-Copper-Tube-Terminals-6-50mm2-/181477847642?pt=UK_Hand_Tools_Equipment&hash=item2a40ec325a
That looks bad - ass.
RE: Joining 25mm 170 AMP Battery Cable - Tom - 30-07-2014
Hammer and a really blunt chisel
RE: Joining 25mm 170 AMP Battery Cable - Janne L - 30-07-2014
A proper crimp tool like the one above is what's needed for a decent connection, avoid solder as much as possible, it can cause the cable to break due to vibration hardening. There are cheap tools available where you but the tube connector in a v shaped indentation and then force a wide punch into the tube, either via a vise or a Mallet.
/Former boat electricity guy :-)
RE: Joining 25mm 170 AMP Battery Cable - Piggy - 30-07-2014
Interesting argument over crimp/soldering.
Some wont ever do any soldering in a car due to vibrations/heat etc...
Then others wont do anything BUT soldering!
With my experience of french electrics and crimped things coming apart....I always solder or where I can, both.