<VV> Converting Rampside from 3sp to PG

[Rex Chivers]

I am in the process of rebuilding a 62 rampside.  It came without an engine 
and I have managed to find a 110 fc engine with a powerglide tranny.  The 
original was a 3 speed.  I would like to adapt the existing harness to the 
PG set up.  Anyone know what needs to be done to get the proper neutral 
saftey switch functionality.  I am hoping that I can perhaps splice the old 
manual safety switch conections to the PG safety switch, any suggestions 
would be appreciated.