Being bored in lockdown I ordered an MMC start button for the Roadster. I have always wanted a car with a start button. Sad I know .
As the 3.7l cars have a jumper lead on the plug behind the dash it should simply be :-
1. Remove the under dash panel by undoing the screws.
2. Remove the plug on the dash
3. Remove the jumper plug and fit the switch
4. Reconnect
What could go wrong after all it is a Morgan.
Alas BHM had the wrong switches from MMC despite the right part number and as you can see the plugs are very different.
.The jumper on the dash roll & the wrong switch connector
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210228_113634.jpg)
The six pin connector under the dash.
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210228_114008.jpg)
Sarah at BHM was very helpful and a few days later the right switch arrived was fitted & works.
One word of caution the back of the switch can go on 2 ways.
Under the dash showing the PCB in the correct alignment
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210228_113221.jpg)
PCB facing up means the flashing green light on the switch before you start doesn't work. Naturally you will have noticed this feature before you put it all back together. If you do that wrong & refit the under dash panel you need to take it apart & get it right. Don't ask how I know.
The right switch
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210306_111144.jpg)
I also discovered the map light wiring which is free & is always powered up. I might later fit a USB socket if I can be prepared to unscrew the under dash panel again.
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210306_114114.jpg)
Green for start . The flashing light on the switch. I also managed to fit an MMC badge into one of the remaining switch blanking plates.
![[Linked Image]](https://www.tm-img.com/images/2021/03/06/20210306_142941.jpg)