No turn signals after heater core repalcement

[SHOtime3]

I replaced my heater core a week ago and have not had turn signals since. It's not the multi-function switch I had a spare and changed it, all of the fuses are good, and I'm 99% sure everything was reconnected (i can't retrace my steps since shophoenixproject is currently down).
The hazzards do not work either and there is no clicking when using the signals although the sidemarkers will light up. In another thread I saw this
"Very possibly the relay/flasher unit up under dash." Where is this located?

 

[Shovert]

Reading in the Chilton manual. Electronic combination turn hazard flasisher . Attached to lower left instrumental panel reinforcement above above the fuse panel. Hope that helps. Maurice

 

[sperold]

I would still work on the multifunction switch. Have another look under the column covers.
Grounds are very important when you are chasing signal light issues. Manually ground (to the battery) a few sockets and see if anything changes.