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Re: My colorado break lights aren't working I checked the...
Break light switch mounted under the break pedal or on the main break cylinder.If you shortcut the wire on the switch the break lights should light up.
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I would next go under the truck at the rear and visually check the bundle of wires there. The yellow and green will be the signals...check each with a test light. The white will be the ground. The brown will be the tail and brake...test each with the test light. If you cant find the power on each go toward the front end of the truck checking. If you have a trailor hitch wire test the plug. Sometimes the plug shorts. This is some of the problem areas. Sometimes it is real nasty finding the problem.
first check the brake light fuse it powers the rear bulbs. remove and verify that all bulbs are working. note the wire colors going to the bulbs. replace as needed. next check the turn signal switch. if broken replace. sometimes switches break on the inside so measure from the power lead to the outputs. The wires going to the bulbs. easy because they are on the bulbs you checked. if you have towing package there will be a connector to hook up lights on the trailer. Inspect for bare wires or cuts in the insulation. good luck
the flasher doesn't have a fuse, its a flasher unit, a relay in a little box or can , located usually behind the fuse panel on the drivers side kick panel,, up by the dash , if your break lights aren't working, first check the bulbs, if they check ok, check the switch at the top of the brake pedal arm up under the dashboard,,
if you have power at the head light plug or pig tail then you have a bad ground turn the head lights on and probe the ground wire with the balb still in if the lights come on the run new ground wire or find the broken wire and repair it
if ther was alot of water in it i would get a new tail light. check the fuse to see if it popped and change the balb. if the light has a small crack it can easly be sealed with silicone.
you could have fried a wire take a es ligh and pull the dash apart and test were the balbs go in oher wise check check the balbs they could have went out
Do you have a hitch/trailer light plug/
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