thank you Tester and others who have sent me information on my 1986 toy pu. Unfortunately while the info. matches from one to another, it does not match my ecc box or pc card. Pin 4 for instance is a dead pin on the pc card. pins 7,8,and 10 all go to live circuits. go figure. I guess I will have to seach the yards till if find a wiring harness. thanks anyhow for your efforts.