turn signal and wiper probs

[1911a1]

I just bought a partially restored Chevy '68 SWB that has some issues. The left turn signal will flash both right and left taillights and left front. But when you hit the brake both rear and left front stop flashing and light up solid like brake lights.

when you hit the brakes the rear light properly but the left front lights up solid. also the left turn indicator in the instrument panel lights up solid during al this when the brakes are applied and you can hear the flasher quit working in the fuse panel.

the wipers will turn on but run very slow.

appreciate any help.
Thanks