Please help me diagnose .. TURN SIGNALS (only front) not working ..
 

hey there .. got an SC just recently .. first thing was checking all lights .. only the right front turn signal was not working and the horn ..

so far so good .. then I upgraded from sealed beam to h4s (they're working properly) BUT at the same point the left turn signal stopped working .. shhh ..

any advise? i want to clean (no outer marker) european look .. please advise step by step!

thanks, martin

Step 1. Make sure you have the proper bulbs installed, not low wattage bulbs.

checked .. have the right ones .. tried replacements, not working either ..

how can I step by step check the wires?

Check the connections in the front part of the fenders ahead of the tires. I had a similar problem with the turn signals and the plastic connectors were coming apart.