the ticking sound is beause you mount the solenoid directly to metal. If you try mounting the aftermarket solenoid like the stock solenoid (put rubber in between) it should go away. I've couple of fren have the same prob. Dont quote me if I'm not right. Cheers.
sifu sifu any S15 owner mind to share how much the fuel consumption of S15 Spec R Manual ??? and how much the maintenance cost of S15
e.g. Timing belt , clutch and etc. . . ..