451 Boot Release Button
For some reason, smart thought it was a step forward to omit an interior boot release button on the 451. Idiots. Let us add what they took away.
Mod difficulty:
Mod Credit: Evilution
release switch on the boot flap. So far I have identified 2 different wiring colours used.
The wire in question comes from SAM plug 8 (N11-8), pin 36.
Splicing The Wire
SAM Unit
one black and one grey. Slide the black one out.
You will see the pin numbering on the side at each end.
Count along to pin 36. this wire should either be Pink/Yellow or Lilac.
Cut the wire and splice a new cable into it. I used a straight crimp connection.
Route the cable to behind the button bank.
Refit the SAM unit and tidy up the cable.
Boot/Trunk Wiring
If you are lucky enough to have the Yellow/Pink wiring colours it is very easy to find
by removing the boot panel (as if changing the rear left hand bulbs). If you have a load
of lilac wires, give up with this route as there are 8 possible wires to choose from.
Splice into the Yellow/Pink wire and run the wire back to the dash button bank.
If you don't have the Yellow/Pink wire available, you will have to lower the SAM unit as shown.
Attaching To The Button Bank
This is where you either get creative, bodge it or buy something.
The AMP connector pins are very hard to get hold of so unless you are like me and
have salvaged parts of a wiring loom from an old smart, you will have to bodge it.
This is a speedo connector from a crashed Roadster, I slid the insert out...
...pressed in one of the tabs...
...and slid the micro terminal out.
This can be wired directly to your new wire and pushed into the appropriate pin connection
on the button bank. The wiring for each switch can be seen further down the page.
If you can't get hold of any AMP terminals, some people have had sucess wedging the wire in.
Making A Button Work
Choose the empty button that you want to turn into a boot release switch and follow
Wiring The Button
Shown below are the 4 possible buttons you can use.
The number above relates the this wiring diagram.
The pin marked with a brown square is the earth, this is already present.
The pin marked with a red square is where you should fit your wired terminal.
If you look at the button bank, you can just see through the connection to the PCB below,
in the bottom left corner you will see a number 1 which relates to pin number 1.
The pins are counted from 1 (bottom left) to 9 (bottom right), 10 (top left) to 18 (top right).
Refit all of the connections, refit the button bank and test your new switch.
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