My fuse box melts, some times smokes when any lights are on (including the fact that all the lights are dim and driving at night is hard to see). Ignition and charging problems come and go. After replacing relays doing reshearch and tryng to understand the maze of wires and diagrams that dont make sence. (I guess that is why I'm a plumber and an electrition is an electriton.) However I do have 4 years race mechanic/restoration experince including wiring a race car (noting vitage race cars dont requier very many wires). I did find a hot rod harnes kit at Centech for a good price. I'm looking for any advice or any one that has done this whether it was race car or not. By the way my car is a modified street car but I have taken it to the track for fun. The Z was my day to day car. It sat for a year. Finaly I have the money to make it a better 240z.

Geez man sounds like a mess..sorry for your troubles...I've not experienced these types of things but maybe better as you say to rewire than troubleshoot...this might be of help...not mine but if it's electrically sound could be "just a swapout", at least it's for your year car...good luck with it...

http://cgi.ebay.com/ebaymotors/Datsun-240z-full-vehicle-wiring-harness_W0QQcmdZViewItemQQcategoryZ10076QQitemZ4573916961QQrdZ1

:beard: