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Question about brake fluid changes + mystery wires

532 Views 11 Replies 8 Participants Last post by  DanaH
Hi there, i have 2 questions. The first is one I haven't seen asked in this forum (though I'm sure someone better at searching could find something), the second is a question I've seen asked but get contradictory responses.

Question 1: What are these wires on the brake fluid cap (circled below), and do they need to be connected to anything?

Font Circle Auto part Drawing Diagram


It kind of looks like they could mate with these others wires (see photo below). I'm trying to figure out whether I accidentally separated them without noticing while unscrewing the cap:
Automotive tire Motor vehicle Tread Fender Hood




Question 2: Why can't I just do the equivalent of a drain + fill of the brake fluid in the master cylinder, without bleeding the brake lines?

Some people say you need to bleed the brakes because there's no circulation in the brake lines, so the new stuff wouldn't actually mix. Other people say water sinks to the bottom of the lines and that's what you really need to get out.

Why, if there is no circulation in the brake lines, does the fluid in the master cylinder dirty over time? If there really is no circulation than it should stay clear, no?. That doesn't make sense to me. The water point I have no argument against, seems sound if that's actually what water does in a brake line. As you can probably guess I'm just trying to avoid removing my wheels and bleeding the lines because I rent and have no driveway/limited tools.

Thanks for the help!
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Paintbucketbrush,
The fluid, should be clear/amberish in the master cylinder. If's darker, bleed the system. if you didn't change fluid in the last 5 years, bleed the system, too. if the brake pedal spongy, bleed it...
Please note, that bleeder screws could be rusty and there's a possibility to strip the heads. Purchase 4 new bleeder screws locally, or speed bleeders online (i doubt that auto parts store would carry proper speed bleeders for Honda).
Note: see if you can turn cap 180 degrees, so the wire connectors are closer to each other.

There are testers that you stick In the brake fluid
Easier/cheaper to bleed the system... Unless you have many old cars.
 
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