CB300F Harness - Honda CBR 300 Forum
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post #1 of 6 Old 06-10-2019, 06:42 AM Thread Starter
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CB300F Harness

Hey guys.

I joined because I am doing a 300F swap on my Honda Grom.

I`ve been looking for a CB300F Harness for the last four months and no luck.

This is the last resort, please help!!!
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post #2 of 6 Old 06-12-2019, 09:39 AM
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Well, I'd imagine that the members here who own CB300F's are currently using their wiring harnesses.

Seriously though, a wiring harness is one of those things I wouldn't want to buy used. Is there a reason you don't want to order a new one from Honda?
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post #3 of 6 Old 06-13-2019, 01:25 AM
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I would think...since most parts for the 300 F and 300 R are inexpensive..the wiring harness (new) would be also.
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post #4 of 6 Old 06-13-2019, 07:33 AM
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The link below is for a 2018 cbr300f's parts schematic, listing the "electrical", parts and costs. May be helpful or not. I've never taken on a project bike, so I'm not sure at what point costs over weighs the desire to see the project through. But good luck.

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post #5 of 6 Old 06-13-2019, 01:57 PM
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I agree, i would not look for this part used. The amount of labor involved to install it is significant. My friend had a Honda Hornet 900 that needed to have the entire electrical harness changed and the mechanic charged him $500 (including new parts). Mechanic advised he has to basically take the entire bike apart to run the wires, its a big job. Have to pull the gas tank.

If the used harness is not good its a tremendous risk to have to do all that labor all over again.

When you say swap the Grom to a CB300 what exactly are you attempting to accomplish? You mean to change the motor of Grom to the motor of a CB300? You may be better off to sell the Grom used and then buy a used CB300. The Grom is a more expensive bike than the CB300.

And then consider after doing all the work how difficult it will be to sell a Grom that has been customized so deeply? Unless you are a collector, customizer or hobbyist I dont think it makes financial sense to do it.
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post #6 of 6 Old 06-13-2019, 04:29 PM
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Originally Posted by King CobRa View Post
Unless you are a collector, customizer or hobbyist I dont think it makes financial sense to do it.
It's a pretty straightforward swap, there are a decent number out there, plenty of YouTube videos. Quickest way to 100mph on a Grom.

Unfortunately, Mark, yeah, nobody here willing to part with their wiring harness on a running bike. (What about the 250's wiring?)

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purchased 2,390 mi // currently 9.4k+ mi
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