1964 brake light issue

[thecarguy]

I just bought a 64 thunderbird the previous owner did a disc brake conversion,I found out the stop lights are not working,I’ve replaced the Switch and the relay and still no brake lights any help would greatl appreciated thanks

 

[74 Harley]

We'll the first thing to check is do you have power at the brake light switch? If so, do you have working turn signals? The brake light power goes through the turn signal switch. You could have a bad turn signal switch as well.
Start by following the power.