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Help with a High Output Alternator *PIX*

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monarchd's picture
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Hello all! I own a 1984 MB 300D Turbo and i am into car stereos, which means i at times need to pull some extra amperage from my alternator and my 55a is NOT cutting it.

I recently contacted Nathan from Excessive amperage and he said he would be willing to modify a typical 55/65a 300D alternator into a 200a HO alternator. And along with the alternator upgrade i was wanting to add on 1/0 guage power wire from the alternator to the battery and grounds etc. so i wont fry the stock wires. Everything was fine until i purchased a bosche 65a alternator and i found this:

the red circled part is for the wiring harness hookup. Now my questions are:

1. Where does this lead to (the harnessed wires) and is there anything between these wires and the battery (fuses etc.?)

I was thinking about i guess having the guy mod my alt so it would just be a single positive terminal which would make my life a whole lot easier. easier because i would just have to run a fused power wire from the alternator to the battery positive.

2. IS there any danger in doing what i typed above?

thanks so much for your help :)

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cth350's picture
Rockville, NY
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Vehicles
1992 500SL
1992 190E
1989 300TE
1981 380SLC
1974 450SL
1969 300SEL 6.3
1967 300SE Coupe
1967 250SE Coupe
1965 600 Sedan
1964 300SE
1964 230SL
1963 300SE

The little guy should be the lead for the dash lamp. The two big guys should be your +V output. That other thing on that back is the voltage regulator. -CTH

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Anonymous
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like that rite?

if so

is there a place i can find a terminal to hook up to those 2 V+ prongs so i can feed a fused 1/0 gauge to the battery?

and there wont be a problem with running the dash lamp and the voltage regulator with stock/smaller wires rite?

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cth350's picture
Rockville, NY
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Joined: December 5th, 2005

Posts:
832

Vehicles
1992 500SL
1992 190E
1989 300TE
1981 380SLC
1974 450SL
1969 300SEL 6.3
1967 300SE Coupe
1967 250SE Coupe
1965 600 Sedan
1964 300SE
1964 230SL
1963 300SE

Actually, the voltage regulator is that black and white gizmo screwed into the alternator. Dunno what that separate little thing is.

The dash light is traditionally a light blue wire and of about 16 (18?) gauge. The traditional +V hookup is a pair of 10 gauge bright red wires going to the starter's +V without a fuse. This is the same point the battery connects to.

Not sure why you couldn't do the same.

-CTH

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Anonymous
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cth350 wrote:
Actually, the voltage regulator is that black and white gizmo screwed into the alternator. Dunno what that separate little thing is.

The dash light is traditionally a light blue wire and of about 16 (18?) gauge. The traditional +V hookup is a pair of 10 gauge bright red wires going to the starter's +V without a fuse. This is the same point the battery connects to.

Not sure why you couldn't do the same.

-CTH

okay so which of the "V+" prongs go to the battery? I heard 1 goes to the ignition, and 1 goes to the battery. im just gonna solder a 1/0 gauge crimp ring onto the battery lead and leave the rest of the wiring stock. should i replace the ignition wire too??

you have been soo much of a help

read that: http://forums.mercedesclub.org.uk/showthread.php?t=12352&goto=newpost;)

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