ok heres the deal.My friend and I did a head swap on his 90 civic Si we put a 94 sohc vtec head on it.we are going to try and hook the vtec switch up to a shift light. well we did and nothing.any ideas?or maybe how did ya'll hook your vtec up?thanks and sorry if this makes no sense in a hurry to get to work thanks again!

 

..did you wire it straight to the vtec light, or did you use a relay?