An interesting question! Your terminology implies that you are building a dedicated competition car with a high degree of electronic measurement and control. yes?
A schematic for an Elan will not be any different to a general racecar schematic though. I recently finished my MGB 5L hill climb car and used the attached schematic for my learning aid as it showed clearly the separation of sensor and heavy loads. I only had wipers and fans extra loads that I fed onto the dirty bus. The fuel pump was an interesting one though as it was in fact controlled through the Emerald ECU and so as not to spike the sensor bus, I used a relay with the coil on the clean bus and the load on the dirty bus - I could not determine, and still cannot, if a relay coil switching on and off created a 'spike' though, so maybe I should have put it onto the dirty bus. Someone might correct me...
This is the schematic. The execution will be a diffent subject where you will have to take in any regulations imposed by your scrutinising body, fusing and cable size etc.
Posted: Fri Jan 21, 2022 6:25 pm
