Is it OK to use the front jump point as a 12v and ground source? - LotusTalk - The Lotus Cars Community
 
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post #1 of 6 (permalink) Old 09-13-2018, 07:13 PM Thread Starter
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My thoughts are to connect a small amp (100w RMS x 4) mounted in the dash and connected via 10ga 12v and ground to the jump terminals located under the front service panel.

Is it ok to use these terminals for such a purpose?

Is the 12v cable fused between the jump point and the battery?

Am I better off just running my own fused 12v cable the length of the car to the battery in the trunk? It is quite a stretch, dash to front, front to floor, floor to rear wall, up rear wall, over shelf, through to trunk to battery.

Thoughts? Thanks

-Smoky

Last edited by Smoky; 09-13-2018 at 07:35 PM.
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post #2 of 6 (permalink) Old 09-15-2018, 03:26 AM Thread Starter
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Lack of responses... And some more thought has led to me to conclude not to use this terminal and instead just add my own new 12v line from the battt to the dash. That's a long line though so I may even fuse it twice just to feel better about the length of powered lead at any given moment.

The existing remote terminal uses a lead that has too many unknowns. It isn't meant to be used constantly, just like once in the car's lifetime - so I have to assume they designed it and the space it lives in around that requirement. The more I think about it I'm not even sure I like it being part of the car. There is a 12v firework fuse basically just running along the driver's sill, completely obfuscated from our want to maintain and preserve. But no one has ever reported an issue about it I guess? So I won't worry about it.

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post #3 of 6 (permalink) Old 09-15-2018, 04:02 AM
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I don't see a problem

I think the only problem I remember seeing is someone got air horn power from there and it caused the ECU to glitch when they blew the horn.

I cannot see an amp having any similar effect

I used them to power high speed on the heater fan to squeeze that last bit of airflow out of it in my AC rework thread
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post #4 of 6 (permalink) Old 09-15-2018, 04:22 AM
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Quote:
Originally Posted by Smoky View Post
My car: 07 Exige S
My thoughts are to connect a small amp (100w RMS x 4) mounted in the dash and connected via 10ga 12v and ground to the jump terminals located under the front service panel.

Is it ok to use these terminals for such a purpose?

Is the 12v cable fused between the jump point and the battery?

Am I better off just running my own fused 12v cable the length of the car to the battery in the trunk? It is quite a stretch, dash to front, front to floor, floor to rear wall, up rear wall, over shelf, through to trunk to battery.

Thoughts? Thanks
That lead back to the battery wouldn't be long at all. The Exige is a very small car. Think about it....would that lead be any longer, or as long, as the leads running from the light switches on the dash back to the tail lights?

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post #5 of 6 (permalink) Old 09-15-2018, 04:35 AM Thread Starter
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Quote:
Originally Posted by 4380r View Post
That lead back to the battery wouldn't be long at all. The Exige is a very small car. Think about it....would that lead be any longer, or as long, as the leads running from the light switches on the dash back to the tail lights?
True. Still, I like to explore all of the options before deciding to add lengths of 12v lead into any scenario.

-Smoky
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post #6 of 6 (permalink) Old 09-15-2018, 06:11 AM
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The 12v wire to the terminal post is a straight run from the battery to the terminal already. It really only sees the fan and wiper loads

2007 Exige S with almost every track mod...
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