So I just purchased a 2002 Ford F250 with 180,000miles. I have no signal lights, no hazard lights, and now no brake lights (somebody said brake lights were intermittent). I replaced flasher relay, and with some testing found no power to relay.. fuse 18 and 27 working. Any thoughts?

 

Ok if you are testing pin 85 on the relay k2 (under the dash, not on fuse panel) and have no power there. The feed to that would be f18 20A fuse. If you have power there and not pin 85 on k2 the issue is in the wiring and best to just follow wire from fuse box (it will be a lite green/red wire). F18 splits at some point to k2 and brake pedal position switch. Likey issue is where the split is...

If you are testing voltage at relay using the relays ground, make sure you have continuity with the relays ground and a body ground...