How do i change my brake fluid, i have a 305 TBI, thanks, cause when i step on the brake, my brake light goes on, thanks

 

Changing the brake fluid will not fix that. You have a defective part somewhere. The brake light comes on when there's a large pressure difference between the front system and the rear system, so one of them is not working.

First check to make sure the MC is full in both chambers. If it is, you probably need a MC.

The easiest way to change the fuid is to simply bleed the brakes, adding fluid as necessary, until new fluid comes out.

 

Agreed. If you plan on replacing the fluid (good idea anyway) you should empty the reservoir and clean it first. This will make it a lot easier for you to see the clean fluid coming out the bleeders instead of seeing a gradual fade to clear.

If you know someone with a snap-on brake bleeder that'd be sweet. It uses a compressor to suck the fluid through the lines. I've been able to do my cars in 15 minutes that way. No tired leg either.