i got the greddy turbo timer with the harness.. and it came with instrutions.. but their japanese. so, i was wondering what does the red wire beside the white connecter go to? and there is also a brown and purple wire with a little connecter that hooks up to the back of the timer can someone help me..

thankyou

 

im sure its either a switch or ground

 

Heres a diy greddy turbo timer install on a obd1 civic, not sure if they used that harness, but it might be able to help you with colors.
http://www.homemadeturbo.com/f...79858

 

i have the same problem as you do to, the website www.homemadeturbo.com does not use the harness.