1. Copyright 2008 David Oroshnik 1 240z Tail Light Enhancements David Oroshnik 16-Jan-2008

2. Copyright 2008 David Oroshnik 2 Sections North American Tail Light Operation –(at least on my ‘72) Modification for European Tail Light Enhanced Modification for Euro Tail Light –Get back the lost brake light Trick Modification for Euro Tail Light –Get back the lost brake light and make it brighter during the day with a simple diode circuit. For added brightness and much faster turn on time, use the 3 Watt Luxeon LED bulb from www.superbrightleds.com. Model Red 1157-RLX3 instead of an 1157 incandescent.

3. Copyright 2008 David Oroshnik 3 North American Tail Lights The large filament in an 1157 bulb draws ~2 amps while the smaller filament draw ~.5 amps. The large filament is used for the brake while the small filament is used for the running lighs Operation: Reverse light – Obvious Running lights (aka when headlights are on) side markers are on, top inner is on, small filament in top outer is on. Brakes applied: Top outer large filament on, turn & brake light on Turn signal on: Top outer large filament flashing, turn and brake flashing If brakes are applied with the running lights both filaments in the top outer will be on. 1157 Two Filament 1156One 1157Filament 1156 One Filament Reverse Turn & Brake Running Turn & Brake Running 1156 One Filament 1157 Two Filament Reverse RunningTurn & BrakeRunning Turn & Brake Top InnerTop Outer Top Inner TurnReverse Turn

4. Copyright 2008 David Oroshnik 4 Original Operation FunctionLights OnBrakes OnTurn Signal OnReverse Top InnerRunning lightsOnOff Top Outer Dim Filament Bright Filament Brake and/or Turn Dim: On Bright: Off Dim: Off Bright: On Dim: Off Bright:: On Off TurnBrake and/or TurnOffOn Off Reverse Off On The brake and turn signal lights are wired in an “OR” configuration.

5. Copyright 2008 David Oroshnik 5 Original Light Wiring (left side) Reverse IndicatorTurn Signal Inner Running Light Outer Running Light, Brake, Turn Factory Shrink Wrap 2 Factory Shrink Wrap 1 Wiring Harness Connector

6. Copyright 2008 David Oroshnik 6 European Tail Lights 1156 One Filament Reverse 1157 Two Filament 1156 One Filament 1157 Two Filament Reverse 1156 One Filament direct socket replacement

7. Copyright 2008 David Oroshnik 7 Modified Light Wiring Reverse IndicatorTurn Signal Inner Running Light Outer Running Light, Brake, Turn Factory Shrink Wrap 2 Factory Shrink Wrap 1 Wiring Harness Connector Cut Brake/Turn wire between The factory shrinks wraps and Wire the end connecting to shrink Wrap 2 directly to the brake pedal. This cuts the brake and turn signals to the outer running light and leaves the amber quadrant as just a turn signal To Brake Pedal X

8. Copyright 2008 David Oroshnik 8 Basic European Tail Light Mod 1156 One Filament Reverse 1157 Two Filament 1156 One Filament 1157 Two Filament Reverse 1156 One Filament RunningBrakeRunning Brake Running lights connect to Green/White (dim filament, 0.5 Amp) Brake Lights connect to Green (bright filament, 2.0 Amp) By cutting the wire the turn signal only affects the amber lens. The downside is that the brake pedal lights only the bright filament in the upper-outer lens, this makes the brakes harder to see. It’s a less safe option. Turn Cut the wire at point shown in the previous slide and hard wire it to the brake pedal as shown.

9. Copyright 2008 David Oroshnik 9 European Operation FunctionLights OnBrakes OnTurn Signal OnReverse Top InnerRunning lightsOnOff Top Outer Dim Filament Bright Filament Brake and/or Turn Dim: On Bright: Off Dim: Off Bright: On Dim: Off Bright:: Off Off TurnBrake and/or TurnOff OnOff Reverse Off On

10. Copyright 2008 David Oroshnik 10 Enhanced European Tail Light Mod 1156 One Filament Reverse 1157 Two Filament 1156 One Filament 1157 Two Filament 1156 One Filament 1157 Two Filament Reverse 1156 One Filament RunningBrakeRunningBrakeRunningBrakeRunningBrake Adds back one brake light for better visibility Running lights connect to Green/White (dim filament, 0.5 Amp) Brake Lights connect to Green (bright filament, 2.0 Amp) Add a second 1157 socket to increase brake visibility Add two-wire socket from another car

11. Copyright 2008 David Oroshnik 11 Trick European Tail Light Mod Add a second 1157 socket and two diodes to further increase brake light intensity Under Braking, the diode circuit lights BOTH the running light filament AND the brake light filament. During daylight this increases brake light visibility. At night it has no added benefit. 1156 One Filament Reverse 1157 Two Filament 1156 One Filament 1157 Two Filament RunningBrakeRunningBrake 3-Amp Diodes Model: 1N5402 Radio Shack Catalog #: 276-1143 Green/WhiteGreen D1 D2 Operation When the brakes are applied, D1 allows current to flow to the running light circuit so both filaments light. D2 keeps the current from running back into the running light circuit. Without D2 the side markers will also light up under braking. For added brightness and much faster turn on time, use the 3 Watt Luxeon LED bulb from www.superbrightleds.com. Model Red 1157-RLX3. These bulbs are a drop in replacement for the 1157 bulb. They’re $24/bulb but that’s cheap if the quicker turn-on keeps someone from hitting you. At 70mph each 10 th of a second in reaction time is worth 10 feet of stopping distance.

12. Copyright 2008 David Oroshnik 12 Diode Circuit

13. Copyright 2008 David Oroshnik 13 FIN