BMW Z3

Workshop

CLASSIC BMW  (RHD-UK)

 

 

Push-Start Switch Panel with Relay

Useful Information

Replacing the Bearing

<26b>

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Diary

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Note: One recommends reading the diary first and then linking to workshop notes to maintain the continuity of the theme...

1

2

Ign.Switch Panel

Start Switch

WebCam Back

Radio 2

Battery Cut-Off

Dash USB-1

A/C Fan    - A

Radio 1

Exhaust Cut-Off

Running-Lights C

USB Hub

USB Dash-2

USB Console Bck

USB Console Frt

Accessory

Accessory

Accessory

Accessory

Fusebox 2 Ignition Supply

Fusebox 1 - Direct Battery Supply

Rear Panel Wiring

Ground/earth 

Positive to Accessory

Relay Connections

C

C

C

Situated on Steering Column

1

Ignition Switch Panel

Start Switch

WebCam Front  B

WebCam Rear

Radio 2

Battery Cut-Off

Dash USB-1

A/C Fan   A

Jumper

Jumpers

Car Battery

Negative Earth  to Car Chassis or Battery

A

B

C

To Second Fuse Box

Direct Positve

Covering:

Fuel Cut-Off

Fuel Cut-Off

WebCam Front B

illuminates

for LED

common Ground

Direct Battery Current

3 Post Switch

Note::

Note:

Note: Slightly Different Fusebox - No earth points
earth will be on the accessory

2nd Circuit Change of Polarity on Switches

Bulb/earth 

This wire layout allows the LED in the switch to illuminate on the up-stroke of the switch

WebCam

During the wiring up, I instinctively wired the positive to where the upper negative jumpers are; (on the diagram below shows the new positions), being use to having the switch being flicked on in the 'down' position as a norm. With the Switch 'protection caps', this makes the functionality awkward in the sense that one needs to be conscious of the act of switching 'ON' ( no doubt one of the reasons why these types of switches have been adopted and used by Aviation. So, therefore the positives needed to be changed or swapped around, (the diagram below has been adjusted accordingly) as to make the 'OFF, to be in the 'UP' position; much easier through pressing onto the protective cap and automatically switching the switch or switches off without having to actually touch the switch itself. This also made the functionality quicker too, Ideal for emergencies, perhaps?

Option 1

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No Liability Do On test bed First