Adding "lots of lights" to '67 W111>Request electrical advice - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 01-26-2013, 04:50 PM Thread Starter
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Adding "lots of lights" to '67 W111>Request electrical advice

I'm building a Rally Tribute out of my '67 230S and will be adding 2, Cibie Super Oscars, a Marchal center light and a Marchal reversing lamp (separately wired to a toggle). I've swapped my standard Euro bulbs up front for Halogens (60/55 W). I'm also installing 2 additional AUX inputs and a map reading light.

I get most of my lighting advice from Daniel Stern Lighting and he's the best. He says I need a bigger alternator than the Bosch alternator (3-ph. A.C.) 14V 35 Amp with a Max output 490 that is standard.

He recommends a '90s era Nippondenso but I would prefer to stay with M-B/Bosch. Any electrical gurus like to weigh in?

While you are at it, I want/need a new battery to go with it and like the Optima offerings. Which one of these Optimas would be appropriate?


Brand:Optima Batteries
Manufacturer's Part Number:9002-002
Product Line:Optima RedTop Starting 12 Volt Batteries
Battery Usage:Starting
Volts:12 V
Battery Terminals:Top
Battery Type:AGM
Cranking Amps at 0 Degrees F:800 amps
Cranking Amps at 32 Degrees F:1,000 amps
Reserve Capacity:100 minutes
Length (in):10.000 in.
Width (in):6.875 in.
Height (in):7.812 in.
Weight:38.000 lbs.
BCI Group Number:34


Brand:Optima Batteries
Manufacturer's Part Number:9022-091
Product Line:Optima RedTop Starting 12 Volt Batteries
Battery Usage:Starting
Volts:12 V
Battery Terminals:Top and side
Battery Type:AGM
Cranking Amps at 0 Degrees F:720 amps
Cranking Amps at 32 Degrees F:910 amps
Reserve Capacity:90 minutes
Length (in):9.312 in.
Width (in):6.813 in.
Height (in):7.625 in.
Weight:33.000 lbs.
BCI Group Number:75/25
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post #2 of 3 (permalink) Old 01-26-2013, 06:41 PM
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Vehicle: 1996 W210 E320 ELEGANCE, 1972 W108 280SE 3.5, 1969 W108 280S, 1971 300SEL 3.5
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If you run everything through relays you should be good, esp since you are thinking of running an Optima Red Top.

For shear cranking power the 1000CCA version is the one to go for, but for practical reasons the version with the side and top mounts means you can add more directly to the battery without crowding the main terminals.

Try retrofitting an alternator from a later V8 car, like a W108 4.5 or W116 V8, they all ran Bosch alternators and I think they are rated at 55 Amps, but also look out for Fords with A/C and V8's as they ran Bosch alternators (well in Australia they did, don't know about the States) and they were rated at 85 to 105 amps, the higher outputs would in the Police Pack Specials.

I could go on but I think you get the gist of what I'm saying.
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post #3 of 3 (permalink) Old 01-30-2013, 02:24 PM
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Vehicle: 1965 220S, 1999 Volvo V70 (wagon), 2006 Ford Crown Vic Police Interceptor, 72 350SL 4 Speed
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Get a high amperage alternator from a late model car. Be aware, your lights will draw much more current thereby loading your engine down. You may run out of horsepower in that case.

Near Manassas Va. '65 220S, 2006 Ford Crown Victoria Police Interceptor, '99 Volvo V70, '72 350SL 4 speed

Not part of the in-crowd since 1952. It's BRAKES not breaks. You break a bone, use brakes to stop your car. /rant
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