- Mercedes-Benz C-Class: How to Install Illuminated Star
Step by step instructions for do-it-yourself repairs
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Illuminated Star Installation help!








The best way to do this for advanced people is to use the lighting wire to control a relay. The contacts on the relay go directly to the battery with a fuse in-line to protect the light up star. Bosch makes automotive relays that are for this purpose that cost <$10
This way you don't overload your lighting circuit or cause any other weirdness to influence the cars computer because you isolate the circuits through the relay.




There are a few issues with using fuse taps.
1. They expand the fuse clips to the point that they sometimes over time will fail to work properly.
2. The fuse tap is sourcing additional power off a circuit designed for 'x' amount of milliamps. Some cars can actually throw codes doing this - especially high end luxury cars with the new LED lighting systems.
The proper way to add ANY new electrically operated device to a car, is to run a new line directly from the battery. You properly size and fuse the new feed. To control the operation of the system tied into another system you drive the new system off of a control relay. The control relay is a small electro-mechanical device that draws very little current and essentially functions as a switch. The power for your new item is fed off the battery then not an existing system.
Connections to the existing system (say for example the lighting circuit) should be opened up where you remove about 1/4" of the insulation off the power wire, solder a new connection to this and tape and shrink wrap up the soldered connection.
There is a proper way to do things in a car environment so the work lasts forever. There are of course short cuts, but I'd caution anyone from doing them in a expensive luxury car. That method may have worked 50 years ago, but since 1990 I've been doing this stuff the correct way and can tell you how you should be doing it today.
Does it need a separate ciruit?
Amplifiers... Yes. Old style light bulbs... Maybe. Led lights... No way.
The Best of Mercedes & AMG
http://www.ebay.com/itm/261447933097...84.m1497.l2649
Above is the ebay store I bought mine, the seller is a NJ Mercedes dealer, but the parts I received were directly sent from MBUSA , not from the dealer, so I guess the dealer sent the order directly to MBUSA.
I have instructions for both the 1st gen star which only lights up when you unlock the door and shuts down when you start the engine. ( But the brightness is same as the DLR LED)
AND the second gen when it lights up all the time when engine is on ( BUT the brightness is far less than the DLR LED, you can only see it at night)
If anyone need these, just send me the email and I'll be happy to send you the instructions.
http://www.ebay.com/itm/261447933097...84.m1497.l2649
Above is the ebay store I bought mine, the seller is a NJ Mercedes dealer, but the parts I received were directly sent from MBUSA , not from the dealer, so I guess the dealer sent the order directly to MBUSA.
I have instructions for both the 1st gen star which only lights up when you unlock the door and shuts down when you start the engine. ( But the brightness is same as the DLR LED)
AND the second gen when it lights up all the time when engine is on ( BUT the brightness is far less than the DLR LED, you can only see it at night)
If anyone need these, just send me the email and I'll be happy to send you the instructions.
Hello!
Could you send me the1st gen star instruction.
Thanks
I also have the LED lights and can hear a control module "Clicking" on/off at the same time as the star randomly turns on. anyone figure this out?












I see the wire tapped into the fuse location, but what do you actually do to the wire to make the tap? Do you wrap each wire around each metal base of the fuse and reinsert it into the fuse panel. I know nothing about this kind of stuff, but want to do it myself if possible.





