car is a 91 civic si

my engine harness is all brittle and starting to fall apart, i was wondering if i can use a 91 integra engine harness?

 

I dont think you can Im pretty sure that its different because even it you had a 90 civic harness it wouldn't work get a 91 si harness to be sure.

 

yea it will work, but you would have to splice ur old plugs onto the new harness. the crx uses different connectors and there will be a few extra wires in the back of the motor if u use stock motor. ive done it to a ls swapped 89 hatch when the original one caught fire due to nobody torqing the fuel filter banjo bolt

 

what do you mean by splice my plugs onto the new harness?