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Pelican Technical Article:

Removal and Installation of Radio

Time:

30 minutes30 mins

Tab:

$50 to $1000

Talent:

*

Tools:

10mm wrench, flathead screwdriver, wire cutters

Applicable Models:

Mercedes-Benz 450SL (1973-80)

Parts Required:

Upgrade radio with CD or XM

Hot Tip:

Disconnect battery

Performance Gain:

Road tunes again

Complementary Modification:

Climate control indicator light

The radio is fairly simple to remove to repair or replace with a newer unit.

Before you do any work on your car it is important that you wear safety glasses, work gloves and dispose of all fluids in a safe manner. Coolant is poisonous and should be treated as such. Animals and small children have been known to die from ingesting coolant. If you have to jack up your car, make sure to use jack stands and chock your wheels as well as applying the parking brake. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability. Always wear eye and hand protection. Disconnect the battery before working on your car.

The factory installed radio / cassette player was manufactured in Mexico by Becker.
Figure 1

The factory installed radio / cassette player was manufactured in Mexico by Becker. While it may be tempted to replace the unit with upgraded technology, consider keeping the original system.

In order to remove the radio, you must first remove the control knobs.
Figure 2

In order to remove the radio, you must first remove the control knobs.

The tone selector is gently removed with a flat-faced screwdriver.
Figure 3

The tone selector is gently removed with a flat-faced screwdriver.

After you remove the knobs and selectors, lift the faceplate off.
Figure 4

After you remove the knobs and selectors, lift the faceplate off.

Using a flat-faced screwdriver, loosen the screws that hold the radio brackets.
Figure 5

Using a flat-faced screwdriver, loosen the screws that hold the radio brackets.

These brackets can be removed in order to be re-used.
Figure 6

These brackets can be removed in order to be re-used.

Once the radio brackets are free, the radio can slip out.
Figure 7

Once the radio brackets are free, the radio can slip out.

This is the lead on the back of the radio that connects the speakers.
Figure 8

This is the lead on the back of the radio that connects the speakers. Disconnect the lead.

There will be a cable tie that holds all the wires together.
Figure 9

There will be a cable tie that holds all the wires together. With wire cutters, clip the cable tie.

There is also the lead for the power and antenna that will have to be disconnected.
Figure 10

There is also the lead for the power and antenna that will have to be disconnected.

Using a 10mm wrench, disconnect the bolt that secures the ground wire.
Figure 11

Using a 10mm wrench, disconnect the bolt that secures the ground wire.

The radio is now free.
Figure 12

The radio is now free. Assembly is the reversal of removal.




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Page last updated: Mon 2/27/2017 03:02:54 AM