This simple request is far more difficult to respond to than you may think.
Circuit diagrams are first by model, then by type of circuit, and then by
specific sub circuits.
This can amount to 30+ pages so makes it very difficult and expensive (in
time alone) to repsond to this type of request.
You have to be more specific with your request by make, model, sub model,
version, AND specific circuit required, e.g., braking lights.
Even then it is not ideal for us.
What would be fairly easy for us to respond to is: "wires colours/details
for the rear braking lights of a Fiat Tipo 1.6, 1992, 5 door"!
Even this might prove difficult to respond to.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.