Electrical
Acura swaps

8 of 8 compatibility entries for Acura.

TL → EG Factory OEM HID kit (Matsushita ballasts with D2R bulbs) TL 1999 → Civic (EG (JDM one-piece H4H headlamps)) 1992-1995 The 1999 Acura TL's OEM D2R HID system is the best-fitting HID option for JDM H4H headlamps (EG Civic J-spec one-piece lights; the same approach was established on JDM DA Integra lamps). The D2R base width is almost identical to the H4H so the bulb does not shake in the socket, and the arc position matches the H4H filament placement, preserving essentially the stock beam placement - the bulb sits only about 1/8 inch further back due to the large HID plug, which also prevents the bulb falling through the housing. Use D2R (with the light-blocking stripe for reflector housings), not D2S. Nothing bolts up: bulb base, seal, retention clip, and harness all require the modifications described. High beam function is lost since the dual-filament H4H cannot be replicated by the single-arc HID. OEM D2R/D2S bulbs are cheap, non-brand-specific, and available from any dealer or eBay, and an unmodified factory kit is more reliable than a rebased aftermarket kit. Fits VERIFIED ✓ MODS REQ.
CL9 → GE8 HomeLink overhead console (with navigation microphone housing) TSX (CL9) 2004-2008 → Fit (GE8) 2009-2014 Most Honda and Acura HomeLink consoles line up with the GE8's two forward mounting holes (nearest the windshield), so a straight HomeLink swap bolts up without roof clearance issues. The 2004-2008 Acura TSX unit is the reference donor; equivalent consoles come from the 2005-2008 Odyssey EX(L), 2003-2007 Accord EX with Nav/HomeLink, 2006-2008 Pilot EXL, and 2006-2008 Ridgeline RTL. Choose a grey or clear-grey unit to match the Fit interior. The donor module must include the Door/Off switch: a module without it (such as a 2006 Odyssey unit) will operate the lights and HomeLink but cannot auto-off the lights after the door closes, so a TSX-type module with the Door/Off switch is required for full function. A GE8 Sport with Navigation already has the overhead map-light wiring; a base car lacks it and needs an extra 12V tap (dome pink wire). Retaining the navigation mic requires transferring the Fit's mic block into the donor console. Fits VERIFIED ✓ MODS REQ.
CL9 → ZF1 Homelink interior light switch module (39180-SEC-A51ZB) TSX (CL9) 2003-2005 → CR-Z (ZF1) 2011-2016 (EX trim) The TSX module shares the CR-Z's overhead-console footprint and mounts with the two factory 8 mm screws into the existing EX 10-pin location, adding Homelink buttons, blue ambient lighting and a HFL microphone. The EX already provides the 10-pin connector and switched power in the headliner. The Accord-with-Navi module (39180-SDA-A52ZA) is an equivalent donor but has an amber LED rather than blue; the blue LED can be transplanted from a TSX unit. A map light case from the GE8 Fit (P/N 34404-SNA-A21ZD) can be fitted for a closer color match. Base CR-Z cars use a different 4-pin connector and have no switched 12V at that spot, so they require additional wiring and cannot use this drop-in approach. Fits VERIFIED ✓ MODS REQ.
DC5 → EG K-series charge (charging and starting) harness RSX Type S (DC5) 2002-2006 → Civic (EG/EK) and Integra (DC2) (EG / EK / DC2) 1992-2001 With the battery and fuse box retained in their OEM engine-bay locations, a fully disassembled RSX Type S charge harness can be adapted with little or no cutting; only the fuse-box connector ends need modifying and the rest is largely plug-and-play into the K20 engine harness. Typical layout uses 4-gauge cable for the starter, fuse-box, and alternator power runs, with a 2-gauge battery-negative-to-chassis ground (one builder cited 6 gauge as the Honda-specified power-cable size). A simplified single-feed layout runs one cable alternator-to-starter with a fuse-box jumper, which suits a trunk-mounted battery. The transmission housing (starter mounting) must be well grounded in addition to the chassis ground. Fits VERIFIED ✓ MODS REQ.
DC5 → EG K-series engine (K20/K20A2) swap conversion wiring harness RSX Type-S (DC5) 2002-2004 → Civic (EG) 1992-1995 The RSX C101 connector mates to the K-series engine harness and the E-plug feeds the K-series ECU. The EG's original main relay is removed and its socket reused as a junction for the fuel-pump and ignition taps. Core circuits land in the stock B-series ECU connector: fuel pump (A7), ignition (A25), battery positive (D1, on a 30 A fuse), ELD (D10), brake switch (D22), MIL (A13), FanC (A12), and Alt-L (A16). VSS, RPM, and oil-pressure signals go to the cluster/gauges, with VSS tappable directly from the instrument cluster. The secondary O2 sensor and DLC are added separately from the service manual. Builders report clean, CEL-free startups once all connections are verified. The same method has been adapted to EF/CRX, EK, and DC2 chassis, which use different main relays and cluster signals. Fits VERIFIED ✓ MODS REQ.
DA9 → DC2 OBD1 GS-R ECU (P72; P61 also used) with OBD2B-to-OBD1 ECU jumper harness Integra GS-R (DA9 / DC2) 1992-1995 → Integra (DC2) 2000-2001 Yes — an OBD1 manual ECU from a 1992–1995 Integra GS-R (P72, or the earlier P61) fits a 2000–2001 Integra (DC2) with an OBD2B-to-OBD1 ECU jumper harness. SpeedFactory lists its OBD2B jumper (SF-01-042) for 1999–2000 Civic and CR-V and 2000–2001 Integra, Accord and Prelude, accepting 1992–1995 manual ECUs such as the P28, P30, P72 and P08. The P61 is not named on that page, though SpeedFactory's OBD2A jumper page lists it. Moates lists the P61 and P72 as the 1992–1995 Integra GS-R ECUs and says 1996–2001 cars are converted by plugging an OBD1 ECU in through a conversion harness. The same jumper lets a 1999–2000 Civic run an OBD1 ECU. Fits VERIFIED ✓
TSX → EG TSX OEM HID projectors (D2S) TSX → Civic (EG) 1992-1995 Genuine Acura TSX HID projectors with D2S bulbs and HID ballasts fit inside the stock EG Civic headlight housings, but nothing bolts up - housing cutting, bracket fabrication, and custom wiring are all required. On these newer TSX projectors the projector's front half has the cutoff shield molded into it, so no external shield is needed. The original author retained the OEM fluted glass lens and reported a clean cutoff on the completed driver's side; required extras are the two projectors, two D2S bulbs, two ballasts, L brackets, machine screws and #2 washers, silicone, Loctite, and a harness. Keeping a spare set of EG headlights is recommended if the car is a daily driver, since the conversion is permanent. Fits VERIFIED ✓ MODS REQ.
CU2 → CP TSX switchblade (flip) key fob TSX (CU2) 2009 → Accord (8th gen (CP/CS)) 2008-2009 A dealer-programmed TSX remote will not work on the Accord because the TSX remote uses a different FCC ID; the dealer can only program the immobilizer to allow engine starting, leaving the remote buttons non-functional. This is why the Accord's own remote board is transplanted into the TSX housing rather than swapping electronics. The immobilizer chip may not sit on the circuit board at all - on valet and TL keys members found it embedded in the blade or rotating section, so it must be located and relocated deliberately. Fits VERIFIED ✓ MODS REQ.