89-94 NISSAN 240SX Engine Bay Chassis Harness Fuse Relay 89-94 NISSAN 240SX Engine Bay Chassis Harness Fuse Relay Box S13 Power Headlight - $299. This is the engine bay chassis harness with the fuse and relay boxes for an 89-94 Nissan 240sx. Please verify that this will fit your vehicle before purchase. See pictures to verify conditionPrice includes shipping within Continental US. Local pickup is available from our shop in Loveland, Colorado.Brand: Nissan Faction! Motorsports S-Chassis Body Harness for S13/14 A complete custom chassis harness for your Nissan 240sx (with SR or KA engines) Completely remove all the stock wiring on your 240sx and replace it with this complete body harness. Instant wire tuck, fuse box is gone, relay box is gone, SMJ gone. Cleans up the steering column spaces makes way for you to come in with your own custom cluster5/5Wire Harnesses · Honda · Mini · Jeep · Sign In · S13 89-94 Battery and Fuse Box Relocation Questions - Nissan Forum May 19, 2011now i also had a question about the relocation of the fuse box or boxes i want to relocate both the left and right ones does anyone have pic's of this? ohhh and here are some pic's of my wiring harness. i re did it as i did not like the factory setup. it's not 100% done yet just want some oppinons.