Please read all below as there is a lot of information.
We at Hux Racing offer a harness conversion service for the kswapped AW11 84'-89' and SW20 91'-99' MR2 chassis. We use an Eaton Bussman relay block with Micro relays and fuses, all new connectors and wiring. This is an MR2 specific wiring adapter and not a converted civic swap piece. Factory MR2 fuel pump wiring will support a 255lph pump, anything larger will require a remote relay. In this situation we will supply you with grounded relay trigger and relay wiring instructions. The engine harness will have the charge harness integrated and alternator cable loomed into the main trunk for MR2 specific routing. MR2 specific dash wiring and Alternator cable routing is maintained.
SW20: MR2 body harness, 02-04 RSX engine and charge harness
We can use any 02-04 RSX engine harness(base and auto as well), please supply matching charge harness. We have also done 05-06 RSX harnesses ( Please note: 05-06 harness will require use of (a) ktuner or (b) kpro 02-04 ecu modified for 05-06 use plus patch harness. You must clearly mark the harness you send us as an 05-06). Civic SI harnesses have also been succesfully converted (Please note :use of stock EP3 ecu will not have factory fuel pump control. Pump will run continuous in key on state). The MR2 body harness is the section of harness from the kick panel by lhd drivers feet running all the way to the tail lights. We delete unused wiring, blend the two harnesses, and build a fuse block/relay plate. Plug and play. The harness will be a tucked version with body harness running down left side inner panels. Fuse box and ecu will be behind left seat. Please send reverse switch connector and speed sensor connector (93+) if using Toyota transmission. This service is ONLY offered to those that buy mount kits from Hux Racing as this is more a "break even" product for us as it helps sell the swap kits. Please do not ship us your ecu.
What Factory dash items will still work???
Tach: Yes, requires tach adapter or "4th gen resistor mod" to dash.
Speedometer: Depends on Trans and year of vehicle.
Toyota trans: Yes for all years
Honda trans: only 93+ MR2 . Output can be programmed in KPro
91-92 MR2 use a cable driven speedo and can not be used with Honda transmission
Water Temp: requires toyota 1 wire dash sensor in water neck. We supply breakout wire at panel for signal.
Alternator light: Will be plug and play
Oil pressure light: Will be plug and play if using simple pressure switch
MIL light: will be functional on SW20
Every harness is custom made to the customers requirements. Here are some things to think about. After receiving your harness we will ask you numerous questions which will include.
1. Factory wide band or aftermarket?
2. Which transmission are you using?
3. What are you running for a dash display?
4. Where is your battery located?
5. What size fuel pump and location?
PLEASE LABEL EACH HARNESS PIECE WITH YOUR NAME (also if 05-06 engine harness)