I am finally done with the 5-speed conversion and I want to play it safe when using the N20. I have a choice of 2 window switches. Tthe MSD and the Harlan Window Switch. What are the advantages/disadvantages of both? I know that the MSD unit needs to be reprogrammed to work with the Maxima, but does the Harlan need reprogrammed as well? Thanks guys.....

 

The Harlan requires no additional programming or 'pills' to set the rpm points and it costs a lot less. It is, however, a simple plastic tube so the MSD window switch looks better.

 

Forgot one thing you may want to purchase if you decide on the Harlan:
He does not recommend hooking the switch directly to the n2o solenoids and suggests using a relay as a go-between. I bought a 30 amp auto relay fron Radio Shack for about $5.00.