Polaris Slingshot Forum banner

1 - 14 of 14 Posts

·
Registered
Joined
·
361 Posts
Discussion Starter #1
I noticed underground auto has a alt. pos. terminal relocation kit.....they run a cable from positive terminal on alternator to a new location in the engine compartment to a insulated bracket with a post to jump start SS using a body ground....they leave the alt. positive wire on alt. and add this cable on top of it and then to insulated bracket with post....has anyone mounted one of these kits or ever hooked up your lithium-ion boost starter to alt. and ground to jump your SS.......thanks for any comments...
 

·
Registered
Joined
·
237 Posts
As I was preparing to remove the engine from my SS yesterday I learned that the big single wire on top the alt goes directly to the main post on the starter where it joins the main lead coming from the battery. I see no reason why you could not use this as a point to jump start your SS.

The kit you mention should be no problem and would also make a nice place to hook up a trickle charger for long term.

That's my opinion and I assure you it is worth every penny you paid for it! LOL
 

·
Registered
Joined
·
989 Posts
It is possible but it is a very small wire (about a #8) that runs from the alternator to the starter, then the 2 gauge wire goes back from there to the battery. I would think a 12 amp car charger would be fine but be careful about using jumper cables as this wire cannot handle the large load that a dead battery would draw.
 

·
Registered
Joined
·
1,011 Posts
So, it sounds like a #2 wire from the starter to a jump post inside the engine compartment would work just fine.
 

·
Registered
Joined
·
989 Posts
Yes, that would work fine. I installed a 240 watt alternator in mine so I have
a separate 2 gauge wire that runs from the alternator back to the alternator as well as the stock wire to the starter so I can jump/charge right off the alternator post. I run a lot of accessories and my amps draw a lot of juice so this upgrade was really needed.
 

·
Registered
Joined
·
36 Posts
It is possible but it is a very small wire (about a #8) that runs from the alternator to the starter, then the 2 gauge wire goes back from there to the battery. I would think a 12 amp car charger would be fine but be careful about using jumper cables as this wire cannot handle the large load that a dead battery would draw.
While I agree with you in theory in this application I believe the wire from the alt to the starter can handle the momentary load of jump starting the SS. Yes the #8 wire is only rated for 40amps but how many amps is the alt capable of?
 

·
Registered
Joined
·
1,011 Posts
Yes, that would work fine. I installed a 240 watt alternator in mine so I have
a separate 2 gauge wire that runs from the alternator back to the alternator as well as the stock wire to the starter so I can jump/charge right off the alternator post. I run a lot of accessories and my amps draw a lot of juice so this upgrade was really needed.
So.... is this one of those perpetual energy thingies? The power just keeps replenishing itself in a never-ending loop?


lol........
 

·
Registered
Joined
·
989 Posts
The wire from the alternator is short enough to handle the 125 amps, but a dead battery can draw a lot more if jumping. That is why jumper cables are so large. Just upgrading to a 240 amp alternator required the larger cable from the alternator but I choose to run it all the way as it was a too hard to get to the start. That being said, if one can just replace the short 8 gauge with a #2 from alternator to starter it would be just as good.

The starter to the battery appears to be #2 so that indicates just how much power may be necessary at times. I would not jump from the alternator unless the hot wire is upgraded, if the battery is calling for more than the wire can handle you will likely melt the wire and possibly cause a fire.

My chart for the wire gauge to a minim of # 4 for a 10' run, I always up one size for safety.
 

·
Registered
Joined
·
361 Posts
Discussion Starter #9
As I was preparing to remove the engine from my SS yesterday I learned that the big single wire on top the alt goes directly to the main post on the starter where it joins the main lead coming from the battery. I see no reason why you could not use this as a point to jump start your SS.

The kit you mention should be no problem and would also make a nice place to hook up a trickle charger for long term.

That's my opinion and I assure you it is worth every penny you paid for it! LOL
It is possible but it is a very small wire (about a #8) that runs from the alternator to the starter, then the 2 gauge wire goes back from there to the battery. I would think a 12 amp car charger would be fine but be careful about using jumper cables as this wire cannot handle the large load that a dead battery would draw.
So, it sounds like a #2 wire from the starter to a jump post inside the engine compartment would work just fine.
Yes, that would work fine. I installed a 240 watt alternator in mine so I have
a separate 2 gauge wire that runs from the alternator back to the alternator as well as the stock wire to the starter so I can jump/charge right off the alternator post. I run a lot of accessories and my amps draw a lot of juice so this upgrade was really needed.
While I agree with you in theory in this application I believe the wire from the alt to the starter can handle the momentary load of jump starting the SS. Yes the #8 wire is only rated for 40amps but how many amps is the alt capable of?
The wire from the alternator is short enough to handle the 125 amps, but a dead battery can draw a lot more if jumping. That is why jumper cables are so large. Just upgrading to a 240 amp alternator required the larger cable from the alternator but I choose to run it all the way as it was a too hard to get to the start. That being said, if one can just replace the short 8 gauge with a #2 from alternator to starter it would be just as good.

The starter to the battery appears to be #2 so that indicates just how much power may be necessary at times. I would not jump from the alternator unless the hot wire is upgraded, if the battery is calling for more than the wire can handle you will likely melt the wire and possibly cause a fire.

My chart for the wire gauge to a minim of # 4 for a 10' run, I always up one size for safety.
wow....that's a lot of info.....gave me some ideas.......since I can reach the pos. term. on alt....I bought a low power shumacher red fuel sl it has 8000mah.....says it has 200starting amp and 400 peak....they say.that it can start up to 3.0l gas motor i'm not sure about a dead battery but maybe just a little down ......you put it on and it take a 20 30 sec. I guess it run a little power to battery at I guess 8000mah and when the 4th light comes on you hit button and if it doesn't start in turns off and resets for another starts....my lithium -ion booster only has 6 gauge cables.........so it may not hurt a 8 gauge cable.....hope I never have to use it but this company says it works...Chinese shumacher...lol.. ....idk...I always change a motorcycle battery as soon as I notice a change in starting pattern or when they reach 2 to 3 yrs depending on the battery....I try to buy the best.....in fact these yuasa batteries seem to be good from my experience...it's 2 years old keep a float on it..........idk might just throw a torx socket and screwdriver in bag and just go off battery ....thanks guys.....lots of good info to digest...
 

·
Beware of Sling Ninja
Joined
·
232 Posts
Yes you can jump start from the alternator, we jump started another sling in our group a couple of days ago by attaching a very small portable booster to the alternator, other end to the frame. Also, I just got the single jump start post from Underground Auto (mentioned above) that attaches to the alternator, just haven't installed it yet. Plan to install it soon. Just installed the Optima Yellow Top last weekend, and have a Battery Tender on the way, so I'm hoping I'll never even have to use it.
 

·
Registered
Joined
·
989 Posts
A small booster battery should work fine, it is not capable of putting out enough amps to overload the power line from the alternator, a large battery, such as in a car would be my concern. A dead battery will draw a lot of amperage when hooked up and even more when you try to turn the starter. I have measured over 600 amps in my car when I used a jumper cable from another vehicle.
 

·
Registered
Joined
·
361 Posts
Discussion Starter #12
Yes you can jump start from the alternator, we jump started another sling in our group a couple of days ago by attaching a very small portable booster to the alternator, other end to the frame. Also, I just got the single jump start post from Underground Auto (mentioned above) that attaches to the alternator, just haven't installed it yet. Plan to install it soon. Just installed the Optima Yellow Top last weekend, and have a Battery Tender on the way, so I'm hoping I'll never even have to use it.
A small booster battery should work fine, it is not capable of putting out enough amps to overload the power line from the alternator, a large battery, such as in a car would be my concern. A dead battery will draw a lot of amperage when hooked up and even more when you try to turn the starter. I have measured over 600 amps in my car when I used a jumper cable from another vehicle.
......thanks guys...that's what I needed to know......I noticed that most of the SSs being towed was from flat tire and no starts.....so I have a can of inflate a flat and my lithium ion booster and a couple tools in my little emergency bag.....and yes I hope I never have to use them but it gives me a little peace of mind to have them......thanks guys
 

·
Registered
Joined
·
47 Posts
As I was preparing to remove the engine from my SS yesterday I learned that the big single wire on top the alt goes directly to the main post on the starter where it joins the main lead coming from the battery. I see no reason why you could not use this as a point to jump start your SS.

The kit you mention should be no problem and would also make a nice place to hook up a trickle charger for long term.

That's my opinion and I assure you it is worth every penny you paid for it! LOL
If you only want to connect a trickle charger, i.e. Battery Tender, et al., you can use a cigarette lighter adapter and connect it to the 12 V outlet above the cup holders. It is unswitched and works great for this.
 

·
Registered
Joined
·
32 Posts
NEED SOMETHING TO DO
I would like to try making my own under the hood battery post and bracket. Does anyone know how long the red and black wires that would be needed to hook up to the starter and ground connection from the holder I will cut out and attach to the ECU using the pcm bolts on a 16 slingshot?
 
1 - 14 of 14 Posts
Top