Hi,How can i wire both fans to come on together.maybe when i turn on the ignition?
Its a 89 iroc 305 tune port,Thanks

 

Why would you want to do that?
There is a reason for allowing the engine to get up to operating temp before the fans turns on to maintain that temp.

 

the current surge of both fans starting together might
cause the ignition to hiccup for a second,so best way
would be to run the two fans connected together using
an electronc varible speed fan control so the fans ramp
up to speed when triggered,avoiding the startup current
surge.

 

And a temp switch in the engine so they come on at correct temp ; not when engine stone cold