Fit I.C.E.Threads discussing in-car electronics including audio, video, security, and navigation systems for the Honda Fit/Jazz
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Disclaimer: The following is provided as a GUIDE ONLY, and neither myself, nor Fitfreak.net take any responsibility for the outcome of someone else doing the following. You follow these steps at your own risk!
I pulled the steering wheel apart last week. There is a place for the contols and a dummy filler block in there but no extra wiring in the airbag clock spring. You would need to 'reassign' the dimmer wire and just ground the cruise button dimmer wire to the horn ground wire so they will not dim anymore. Honda only uses one wire for audio controls so you can use this now unused dimmer wire and cut it at the car side of the clock spring and run it to the radio. There should be an empty pin in the harness.
I pulled the steering wheel apart last week. There is a place for the contols and a dummy filler block in there but no extra wiring in the airbag clock spring. You would need to 'reassign' the dimmer wire and just ground the cruise button dimmer wire to the horn ground wire so they will not dim anymore. Honda only uses one wire for audio controls so you can use this now unused dimmer wire and cut it at the car side of the clock spring and run it to the radio. There should be an empty pin in the harness.
Kinda funny. That's the way I was thinking of wiring it too. First thing I want is my damn service manual so I can see how the cruise controls are wired. Another option is to relocate the main cruise button to the dash and using that wire too.
I've asked Ben at AJ-Racing to see if the blank out plate on the left is the same in the other markets. If it is, the radio button plate will bolt up. Then the wiring.
The JDM Fit/Jazz has two wires from the radio to the buttons in the steering wheel. Not sure if one wire can simply be grounded or not.
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Vivid Blue Pearl 2007 Honda Fit Sport MT
My list of Goodies... JDM Honda stuff: LED tail lights, armrest, leather shift knob, coin tray, roof console, steering mounted radio controls. Honda Canada stuff: rubber floor mats, trunk liner, cargo cover, cargo net, re-keyed locking gas cap, exhaust tip finisher, lock nuts. ICE: JVC KD-AVX33 headunit, PAC SWI-JACK. Other items: Eibach Pro springs, CL map lights with Homelink, LED 3rd brake light, tint.
On every Honda/Acura I've dealt with, when we use the steering wheel integration modules for aftermarket radios, the one wire is trigger and the other is simply ground. So you would be able to ground the steering control to the same horn button ground wire and only loose the dimming feature of the buttons. I assume the radio controls are lit too so you would have to jump those wires to the cruise wires..colors will prob match right up.
After doing some more digging, looks like wiring these buttons will be even easier than I imagined! Since I have a manual Sport, there should be 2 unused wires in the steering wheel since I don't have the padle shifters and The manual and automatic USDM Fit Sport use the same cable reel! Here's hoping the CDM Fit Sport is build the same way.
If the pricing is reasonable, I'll be ordering the buttons.
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Vivid Blue Pearl 2007 Honda Fit Sport MT
My list of Goodies... JDM Honda stuff: LED tail lights, armrest, leather shift knob, coin tray, roof console, steering mounted radio controls. Honda Canada stuff: rubber floor mats, trunk liner, cargo cover, cargo net, re-keyed locking gas cap, exhaust tip finisher, lock nuts. ICE: JVC KD-AVX33 headunit, PAC SWI-JACK. Other items: Eibach Pro springs, CL map lights with Homelink, LED 3rd brake light, tint.
I took my aiur bag out () and confirmed that there are 4 available pins in the cable reel. I've ordered the radion controls and steering sub harness from the JDM Fit from AJ Racing and I already have the extra wires to slip into the radio harnes.
As soon as I get the parts I'll be installing them and creating a how to.
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Vivid Blue Pearl 2007 Honda Fit Sport MT
My list of Goodies... JDM Honda stuff: LED tail lights, armrest, leather shift knob, coin tray, roof console, steering mounted radio controls. Honda Canada stuff: rubber floor mats, trunk liner, cargo cover, cargo net, re-keyed locking gas cap, exhaust tip finisher, lock nuts. ICE: JVC KD-AVX33 headunit, PAC SWI-JACK. Other items: Eibach Pro springs, CL map lights with Homelink, LED 3rd brake light, tint.
SWEET!! one question is if there is 4 extra pins in the manual sports? cuz i have an auto sport and i was wondering if i need all of those wires. a writeup would be awsome.
Got my service manual today. The famous pin 3 on the radio for steering controls must have been relocated. All the pin assignments on the Fit are at different locations than our 2000 Odyssey. GRRR...
Good news is my controls were shipped from AJ Racing in BC on Friday.
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Vivid Blue Pearl 2007 Honda Fit Sport MT
My list of Goodies... JDM Honda stuff: LED tail lights, armrest, leather shift knob, coin tray, roof console, steering mounted radio controls. Honda Canada stuff: rubber floor mats, trunk liner, cargo cover, cargo net, re-keyed locking gas cap, exhaust tip finisher, lock nuts. ICE: JVC KD-AVX33 headunit, PAC SWI-JACK. Other items: Eibach Pro springs, CL map lights with Homelink, LED 3rd brake light, tint.
Here's hoping the CDM Fit Sport is build the same way.
) and confirmed that there are 4 available pins in the cable reel. I've ordered the radion controls and steering sub harness from the JDM Fit from AJ Racing and I already have the extra wires to slip into the radio harnes. 
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