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Old 06-12-2003, 04:49 PM
han han is offline
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Join Date: May 2003
Location: dallas
Posts: 5
Any power source under the hood in 96 S500 Coupe

The battery is in the trunk, does anyone happen to know if there is a power source under the hood and where it's located ?
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Old 06-12-2003, 06:01 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
The fuse box?

95 S420
91 300SE
87 300SDL
83 300SD
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Old 06-12-2003, 06:22 PM
Posts: n/a
Is this a trick question? My guess would be the engine.
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Old 06-12-2003, 06:30 PM
han han is offline
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Join Date: May 2003
Location: dallas
Posts: 5
oh no, the reason I asked because I'm buying an HID kit and there's a wire from the kit that I need to connect to the battery. The battery in the trunk, so I wonder if there is any source of power in the engine bay that I could hook the kit to.
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Old 06-12-2003, 08:38 PM
KenP's Avatar
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Join Date: Dec 2002
Location: Southern New Hampshire
Posts: 418
Hey, another '96 S500 coupe!

Got one of those myself... great car!

There are a number of places under the hood that have power. Most are light gauge wire and won't provide much current.
Without any other info, I suspect they want you to find a clean source of power that can deliver serious current without a major voltage drop... hence the connection directly to the battery.
If so, there are two connections under the hood that come straight from the battery + side. One is on the starter solenoid. The other is the "+" connector on the rear of the alternator.
Careful with these connections... they are hot all the time that the battery is connected and both can provide some serious amperage if you short them to ground. The alternator wire is the lightest of the two... and it still handles your 143 amp alternator output. Maybe one of the techs on this forum has a better place to hook in...

What kind of HID kit are you going to use? I briefly looked into these and found they had a single light source for each headlamp... so, you don't have a high beam possibility.... Have you found a kit that gives you high and low beams?

It probably doesn't matter much from a driving standpoint, but here in Virginia, if you don't have working high beams, you don't get through annual safety inspection.

Please keep us informed as you do this...

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Old 06-12-2003, 10:48 PM
han han is offline
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Join Date: May 2003
Location: dallas
Posts: 5
Thank you KenP, I will confirm with them if I should connect it to the alternator or the starter, and I'll remember to disconnect the battery before hook it up.

The 96 coupe has H4 bulb, and there are 2nd generation HID Bi-Xenon H4 kits available on the market. (1st gen Bi-Xenon is not reliable), as I've heard. Two kits I'm looking now are from and . Hid-online has Philips components, lifetime full replacement warranty. Proxenon has Bohmen components, one year warranty, a small but sensitive ballast that they advise not to let it touch the ground ! Both have 6000k color bulbs and claim that their bi-xenon technologies are reliable, I don't know if they're the same.

I have an 6000K H4 kit with low beam only for another car from hid-online about 2 years ago, and it's working fine. With their lifetime warranty, I don't have to worry much about it. For inspection, just change the bulbs, unplug the ballast wire from the original bulb connector and plug the connector back to original bulb. ( I choose to go to an easy inspection station though
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