Question about 1995 Chevrolet C2500

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95' chevy.. blinker short?

I got a 1995 Chevy 3/4 ton pickup... the blinkers do not work

I replaced the bulbs.. and the flasher/relay for both the hazards and the blinkers.

I discovered a blown fuze.... so I replaced the fuze and now when I turn the key on the blinkers work-- but the fuze gets very hot and I start to smell a burning plastic smell coming from around my heater/ac controls

I have already replaced the relay.. and even tried the old one again and it does the same thing... where is the short? what else is on that circuit?

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The question you asked, cannot simply be answered in a few sentences on here. This is not to dissuade you from using this website, nor is it to simply brush your question aside. I want to give you the best possible solution. (Besides, you might give me a good rating!)

Wiring is complex for a vehicle. There is over a Mile of wiring! One circuit connects to another circuit, and possibly another circuit, and winds up going to the fuse block, then the battery. (Some circuits do not go to the fuse block)

It is for this reason that I suggest you obtain a wiring diagram for your truck. I don't know if the off the shelf manuals sold at auto parts stores will have them for your truck, or not. You can go to Autozone.com, join, and find your truck.
(Not pushing Autozone!)
After you find the year, maker, model, engine, then go to the Repair Guides.

From there click on Chassis Electrical, then on the left click on Wiring Diagrams.
You have to trace the circuits down.
No sir! It is NOT easy! Many a mechanic will shy away from wiring problems!

Use a multimeter first, (Your local auto parts store should have a cheap one available), and start with continuity checks. (Multimeter is set to OHM's) Then you can check for power. (DC set to the 0-50 volt scale)

Tip from me:
1.I have found that after a circuit has overloaded, and replacing a fuse doesn't help, (Such as in your case), that you need to check the Junction Block connector. The wiring harness that is in the engine compartment, and goes to your firewall, that Black rectangular piece of plastic is the Junction Block. It connects to the Fuse Panel inside the drivers compartment firewall.

Often times, one or more pins in the Junction Block are touching, due to the block has melted. This makes a short to other pins.

Posted on Jul 19, 2009

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