Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

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BMW Installation Instructions

Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Tools and materials required:

Ratchet (1/4 inch)
Extension (1/4 inch)
Socket wrench (1/4 inch), 8 mm, 10 mm
Double open-ended wrench, 12 – 13 mm
Power drill, drill bit dia. 4.5 mm
Hammer
Centre punch
Small paintbrush
Zinc powder paint

Contents

Section

  1. Removing rear seat
  2. Disconnec ting battery
  3. Removing C-post trim
  4. Installing and connecting amplif iers
  5. Installing rejector circuit
  6. Installing additional wiring harness
  7. Installing and connecting diversity unit (multiple-aerial control unit)
  8. Installing and connecting diversity unit (multiple­ aerial control unit) on cars with CD radio receiver
  9. 3-aerial diversity circuit diagram

1. Removing rear seat

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Lift rear seat base (1) out of its holder in the direction of the arrow.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Fold down the rear centre armrest. Press together the catch as indicated by the arrows and remove the centre armrest.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Unscrew the nuts (arrows). Take out the seat belt bolts.

Note the order of installation (see diagram).

When installing: Tightening torque = 43 …48 Nm.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Fold back the insulating mat on the left and right. Remove the nuts (arrows).

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Lift rear seat back out of its holders and pull forward. Pull the seat belts through the trim and remove the seat back.

2. Disconnecting battery

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Disconnect the negative cable (arrow) from the battery.

Note:

The battery is located under the rear seat on the right.

3. Removing C-post trim

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Pull of f the edge protector at the C-post.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Pull the C-post trim forward out of the retaining clips. Press out the reading light and pull off the plug. Take off the C-post trim.

4. Installing and connecting amplifiers

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Cut the insulating mat at the point indicated.

A = 130 mm

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Mark, centre-punch and drill a 4 mm dia. hole on the left C-post.

Remove all swarf . Coat the edges of the hole with zinc powder paint.

A = 25 mm
B = 25 mm

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Attach aerial amplifiers (1,2,3) to the C-post with self­ tapping screws (arrow).

1 – FM amplifier (lower rear-window aerial – HLU)
2 – FM amplifier (upper rear-window aerial – HLO)
3 – AM/FM amplif ier

Note: Holes for amplifiers (2,3) are already provided.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Connections for the heated rear window (8) {black) and the radio cable (6) (brown plug contact) are tied back on the car’s main wiring loom at the C-post.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

  1. Connection for FM amplif ier (upper rear-window aerial – HLU)
  2. Connection for AM/FM amplif ier
  3. Connection for FM amplifier (lower rear-window aerial – HLO)
  4. Connection (cable adapter) for diversity unit
  5. Diversity unit connection
  6. Diversity unit connection

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Connect the wiring to the aerial amplifiers. Note:

Connections (1,2,3) are made to the additional wiring harness.

Note the correct coding. Connection (4) is not required. Insulate this connection.

5. Installing rejector circuit

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Push rejector circuit with guide lug (1) into the right-hand C-post and secure with a self-tapping screw.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Connect wiring to the rejector circuit as illustrated. Install parts by carrying out the removal procedure in the reverse order.

6. Installing additional wiring harness

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Install the additional wiring harness alongside the exist­ ing wiring loom and secure with cable straps.

7. Installing and connecting diversity unit (multiple-aerial control unit)

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Attach the diversity unit (multiple-aerial control unit) to the holder with two B 3.9 self-tapping screws.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Insert the diversity unit between the stop and the instru­ ment panel with the screw slackened off and then screw into position.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Push on the adapter wire and connect to the diversity unit.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Connect wiring to the radio as illustrated.

1 Radio IF

2 Radio HF

8. Installing and connecting diversity unit (multiple-aerial control unit) on cars with CD radio receiver

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Only on cars equipped with CD player:

Install additional wiring harness as illustrated and se­ cure with cable straps.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Mount the diversity unit (multiple-aerial control unit) on the left of the CD converter with two B 3.9 self-tapping screws.

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

Connect together the diversity unit (multiple-aerial con­ trol unit) and the CD converter as illustrated. Install the remaining parts by carrying out the removal procedure in the reverse order.

3 – aerial diversity circuit diagram

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

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Installation instructions for 3-aerial diversity unit BMW 7 Series (E32)

  1. VHF connection
  2. Medium-wave connection
  3. Connec tion for VHF and heated rear window, +
  4. Connection for heated rear window, +
  5. VHF connection
  6. Rear window, –
  7. Rear window, –
  8. Diversity unit connection, FM-1/2
  9. HF wire for diversity unit, AM/FM
  10. Radio (white)
  11. Rear window (black), +
  12. Diversity unit connection, FM 3
  13. Rear window (brown), –
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