i helping my friend on his dual point to multi. i done plenty of them, but this time he got a conversion harness. so i plug it in, well, i'm little confuse?
the c1, c2, and other? do i have to do that on the harness? it didn't have any instruction. and it have a 4 wire plug that didn't tell me where it go to, but i have a strong feeling is for the c1, c2, b... inside the car. anyone know where that wireharness instruction can be fine at?

car start then die. code 4, 6. coolant temp, and crank angle, so i know that wiring have to be done. thx