I added a timer circuit to my Electric Choke 

Probably does not apply to most MGB owners. But for those that have been following the project. I added a solenoid to my Weber DCOE 45 carb to activate the starting circuit. well, I have been forgetful, and have burned up a few, so I decided to install a timer to prevent leaving it on too long
link to timer module ($9)
1pc DC 12V/24V Adjustable Cycle Times Switch Module Delay On/Off Timer Delay Switch Module 6 Types Optional (DC12V 0-120mins) a.co/d/hir2A8p
link for solenoid ($18)
Abletop Push Pull Solenoid DC 12V 35mm Long Stroke Small Electromagnetic Electric Magnet For Automobiles a.co/d/i2tP86w