I have a 2000 blazer, the low beams don't work and DRL either, High beams, park lights, turn signal all work fine, I replaced the turn signal switch and DRL relay, any ideas, thanks for the help.

 

Regular blazer or ZR2?

 

Regular blazer, also headlight switch was replaced

 

Check this out:


If you have already checked the headlamp power relay and the headlamp grounding relay for proper operation and that they both are putting power/ground to the respective wiring, then the only other thing would be the dimmer switch portion of the multifunction switch. But I would inspect the headlamp grounding relay which is located in the body relay block up under the driver side dash.

 

same problem here on my 94 full size- only have the hi beams. replaced the headlight switch, bulbs look good... if it helps sort it out I also have no wipers so I'm thinking it's the MFS. I looked for the replacement how to here, but nada. Help?

 

OK I'll ask again...

Does anyone or can a moderator please put up a wiring diagram as above for a 94 fullsize? Changed out the headlight and dimmer switches, now looking at replacing the multifunction switch seeing as the low beams, wiper, washer pump and cruise are all out.

 

my suggestion to you is to make your own thread rather than try to piggy back off someone elses thread.

His truck is a 2000, yours is a 94, two different trucks, different wiring diagrams

 

If they are all out, have you checked the fuses? Connections at the multifunction switch?

I don't see where you asked for a diagram to begin with, but you might want to invest in a good (factory) service manual and wiring diagram book set if you want to be doing these types of repairs. They pop up on eBay from time to time. You are looking for the Light Duty Truck Unit Repair Manual & the C/K Truck Factory Service Manual. Or you may just want to put the $30 or so dollars into an AlldataDIY.com account.

As stated, you have only posted in other people's threads rather than posting a thread of your own in the appropriate area.

As far as the diagrams go, you have to list more information about your truck to get the appropriate diagrams. Do you have composite or sealed beam headlights? Do you have fog lamps? Do you have daytime running lights?