Hey All,

I have seen numerous people using Harness Extensions on their IS cars to avoid having to cut up their OEM Harnesses. I have looked but not found an extension harness for any GS models. I have a 98 GS400. Anyone know if any company makes an extension harness for my car? I love the idea of being able to keep the stock connections and use the harness as a base for mods.

Please Help!!

Eric

 

I don't think any companies make an extension harness for the GS4. For us GS300 guys, we can use the IS300 harness. Two companies that make harness extensions are autosport and boomslang. I personally have a boomslang harness and I know many people who have them. Boomslang also makes pnp harnesses. Try contacting them, I'm sure they can make you a custom one for the GS400. If you need the ecu pinout for the GS400, talk to JeffTsai.

http://www.autosportwiring.com/index.html

http://www.boomslang.us/

 

Boomslang can definitely make you any damn harness you need! They are awesome. I bought a custom PNP harness to connect the factory harness to my Apexi Neo on my GS4 and it is perfect; installation looks very clean. You will spend some $$$ though; I think I paid around $230 shipped.

 

Hi, i want to know the boomslang harness model number so i can ask Jeff if he can make one for my 1999 GS400 to go with my SAFC Neo.