i currently have a 91 dx project car and the whole front end need new wiring...now someone was telling me that i can not use si harness' on my dx civic..is this true? because i found someone selling the two underdash harness' as well as the headlight harness' from a 91 civic si and i was gonna get em, but now im uncertain as to if it is gonna work or not...if i use the si engine harness' as well as the si underdash and headlight harness' will they work with the rest of the cars wiring or is it really that different? i should mention that it is an obd b16...
can i use modified dx engine harness and subharness to work with the si underdash harness' and si headlight harness?

 

Dont wast your time keep the rest of your cars wiring stock.

 

yeah good advice man..it has nothing to do with the question i asked