Battery Dead Again!!!

1990 Miata with WestCo battery:

I seem to forget to turn my lights off and run down the battery too often. I'd say it happens about twice a month. I have a portable battery jumper in my house and its no problem starting the car when I forget to turn off the lights at home. But it really hurts when I forget away from home. I may have to keep the portable battery unit on the passenger's side floor. I'm afraid to put it in the trunk, because you know what will happen. A dented trunk, from within.

To be properly warned, I bought one of those light minders from Miata Marketing. Its a buzzer and has two wires that attach to a couple fuses inside the car. Unfortunately, the ends of the wires have clips which go under two specific fuses, but its too thick to insert them into the fuse holder without forcing them in and damaging the fuse holder. Yes, I used the right clips (there were 3 depending on year and model). The bottom line: I had to cut the clips off and wrap the bare wire around the fuse leads and insert them in. That worked for a while, but the vibrations cause it to no longer make a good contact and the warning buzzer no longer works. I plan to solder the wires onto the fuse leads, but what if that fails?

My other idea is to get one of those Priority One units which cuts off the battery when in reaches a threshold. Then if I leave the lights on, I can open the trunk and press a button to allow the battery to work enough to crank the engine. However, the friggin thing is almost as much as buying a new WestCo battery.

Other than telling me to not ever leave the lights on again, is there any advice or tips or products?

Thanks,

Gary

Reply to
Gary
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There is a subtle 'light on' warning signal that is standard on many Miatas -- THE BIG FREAKIN' BARN DOORS FLANKING THE HOOD. If you train yourself to detect this slight change in body shape, it may alleviate your problem.

Reply to
Southoceandrive

The parking lights alone draw enough to drain the Miata's small battery in a few hours. If you leave a door ajar over a weekend, the interior light will run the battery dead flat as well.

One of these days it may happen to you. I'm sure you'll pardon us if we howl with derisive laughter.

Gary, the miata.net Garage has instructions to turn your seat belt buzzer into a light minder:

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Mine's been wired that way for years, with no problems. I never need to be reminded to use my belt. But the buzzer has saved my battery a dozen times.

Reply to
Lanny Chambers

Southoceandrive; your reply was hilarious. I laughed so hard I almost spilt my tea!

Thanks for the laugh.

Jitendra '95 Red

Reply to
Jitendra

That can be quite effective if you mainly drive your car on sunny top-down Sunday afternoons, with maybe an occasional 5 minutes in the rain or twilight. Those who *really* drive their Miatas, however, tend to often see absolutely nothing strange in the two headlights they have been looking at many times, including the past many hours in rain or darkness, when they have stopped the car.

I am sure *some* people who really drive their Miatas will recognize the problem anyway. I just cannot check that claim. I know that my light buzzer stopped the problem. My fuse tap does not fit that well with the fuse in the fuse box either, but I have not have it fall out in the seven years or so I used it.

Leon

Reply to
Leon van Dommelen

The barn doors aint the problem, Nimrod, its the freaking parking lights!

Reply to
Gary

I'll let you know if soldering the leads on actually works. Why did they make the fuse clips so thick, because it would have worked had they engineered the light minder for all Miatas' fuse boxes.

I like Larry's FAQ about converting the buzzer to a light minder.

Anyone know how many pennies Mazda engineers shaved off the cost of a Miata by not implementing a warning alert if you leave your lights on when the ignition is off?

Reply to
Gary

I can't think of a reason to use the parking lights... if I turned them on when I parked the car, they would drain the battery.

Pete

Reply to
Simply Pete

Actually, I think they just got a generic kit, probably not really intended for mini-fuses.

He likes to be called Lanny, but Larry is OK. :)

Well, since the US government requires a seat belt annoyer, they assumed that people entering a *sports car*, fresh to do some real driving, and exiting it tiredly, would end up converting a seat belt annoyer in a lights-on warner, allowing the cost of the second buzzer to be saved. :)

Mazda was trying to produce a sports car for young people still able to drive it, rather than for old people able to afford it. Any added cost multiplies because the amount of the cars you sell decreases with increasing price, meaning the same development cost must be supported by fewer cars. It quickly adds up.

Leon

Reply to
Leon van Dommelen

ffffthhttt.......ACK!, there goes my coffee all over the monitor ;-) ~Cissy :-)

Reply to
Expmiata

Perhaps he's just leaving the running lights on. That's what gets me sometimes on rainy days. Do the newer Miata's have the auto-lights off feature?

JJ

Reply to
Me

I tried soldering to the legs of both fuses and its still tough to insert. Maybe its the thickness of the wire pressing up along the side of fuse. I am going to try and drill down from the top and solder into the top of fuse.

Reply to
Gary

How about taking the fuse box off and trying to tap into the wires going to it?

Leon

Reply to
Leon van Dommelen

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