I am trying to turn off airbag and emergency brake lights.
Car is for racing so need speedo and tach to still work.

 

i think a better question is-
why is your airbag/ebrake light on in the first place

there should be only one wire going from the e-brake to the dash if its anything like the fasten seat belt light. if its disconnected, no light. if it completes the circut, it goes on

 

airbag is removed for racing.
Thus the light.