450SLC Becker Mexico Cassette install part 4 – Final installation

I am currently in the process of installing a Becker Mexico Cassette in my 1977 Mercedes 450SLC. In part one, I covered buying and testing the radio. In part two, I covered upgrading the speakers, and in part three I covered the wiring. This part will be all about actually installing everything.

My first task was setting up the control button and microphone for the Tranzit BLU. The control button makes this a truly hands free system. It is used to control the functions of the Tranzit BLU such as accepting calls, hanging up, skipping a track and so on. […]

450SLC Becker Mexico Cassette install part 3 – Wiring up the Becker

I am currently in the process of installing a Becker Mexico Cassette in 1977 Mercedes 450SLC. In the first part, I covered buying and testing the radio. In the second part, I replaced all the speakers in the car. In this part I am covering the removal of the old Pioneer CD player and cleaning up the wiring in the car.

The challenge is that in the first 10-20 years these cars were around, they had all sorts of radios, phone kits, alarms and so on. Most of the time the wiring for these systems is incredibly shoddy. In many […]

450SLC Becker Mexico Cassette install part 1 – Preparing the radio

Over the last 12 months or so, I have been focused on getting period correct Becker radios installed in my Classic Mercedes cars. I had never experienced these radios until I purchased my one owner 560SEL back in 2020. It was owning this car that made me realize how well they work in the car. I’ve started to view them as part of the overall experience of owning these cars rather than just a way of getting sound.

Last year I started to source the right radios for the cars I owned. I originally planned to start with my 450SLC, […]

Becker Mexico Cassette 370 Operation Instructions

The Becker Mexico Cassette is the radio most often associated with Mercedes-Benz cars of the 1970s. At least in Australia, it would progressively become standard in the various Mercedes-Benz models until the end of 1978. There were a few different varieties of this radio over the years, the instructions below are from an 370 M series radio, originally fitted to my 1977 450SLC. For 1978 in Australia, the Mexico Cassette moved to the 485 model for that year only.

The Mexico Cassette was always standard on the 450 models, but optional on other cars in the early 70s. At least […]

Reinstalling a Becker Mexico cassette in a 1979 450SE

One of my friends in the Mercedes Club recently bought a nice original Mercedes-Benz 450SE. Is a 1979 model in Silver-Green metallic with date leather. It is equipped with a sunroof, which is surprisingly rare on an Australian delivered 450SE. The cars came well equipped with standard leather seats, self-leveling rear suspension, AC, power windows etc. The two features that they surprisingly didn’t have for such an expensive car is the sunroof and rear headrests. Both could be optioned. This car has the colour matched hubcaps that I prefer to the wheels. I was able to drive this car at […]

Becker 374 Operation Instructions

The Becker 374 Mexico Cassette Vollstereo Reverse was the standard radio installed in the S-Class from 1979-1981 models in Australia. It was seen on the last of the W116s and I believe the early W126 too. This radio replaced the 485, the last of the pinstripe models in the W116s. It was the last of the older style radios with knobs to be found on the S-Class before the digital display radios were introduced.

The most significant difference between the Becker 374 and the similar looking Europa was the auto tune feature. This is commonly known as the ‘Wunderbar’. This […]

Becker 868 Operation Instructions

In Australia, the 560 models were standard with a Becker 868 or later 874 Mexico CD Player. This doesn’t sound like much of a deal in 2022, but back in the mid 80s this was a huge deal. Should you have wanted to upgrade your 300SE or 420SEL from the standard Becker Cassette player to the CD, you would have paid more than $2,000 extra in 1990. This is almost $4,500 in todays money.

In most countries, the CD Player was an optional extra even on the 560 models, but Mercedes-Benz Australia priced them so high they needed justification for […]

Planning Becker radio installs

In the two years of owning my 560SEL, one of the things I have appreciated is the original Becker CD player. I’ve owned many classic Mercedes-Benz models over the years, but until the 560SEL none of them had their original Becker intact. The Becker radios just look and feel right in the dash of the car. I had never really understood that before. That got me thinking about putting some of my other cars back to stock.

The first car in line is my 1977 Mercedes-Benz 450SLC. When I purchased the car in 2003, it had a 90’s era cassette […]