Originally Posted by Mark L
I just wired my rear lights and turn signals, tail lights, stop lights all work.
Congratulations

Originally Posted by Mark L
Since turn signals share the same wire with stop lights to the rear. When stop lights are on the turn signal is not.
Actually, it is "when the turn signal is on the brake light for that side is disabled".

Originally Posted by Mark L
So unlike a modern car when stopped and turning only brake light is on until I take foot off brake. Is this accurate operation for 1955 chevy truck 2nd series?
Modern cars have a separate rear bulb for brakes and turn signal. Your Chevy doesn't.

Originally Posted by Mark L
Also did that truck come with flashers / hazards?
No flashers. And the turn signals were an option.

Originally Posted by Mark L
I can’t locate anything in the wiring diagram or manuals. Mark
I'm sure someone can come up with a Chevy specific wiring diagram. The GMC manual on line has a really bad copy of the wiring diagrams.

'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.