1989 gmc 1500 horn not working cant find fuse
It's under the hood. when you depress the horn button that switch energizes a relay that in turn operates the horn, which needs more current than could be switched through the horn button. the relay and the fuse (it's a 20 amp fuse if my chart is right) are both in the underhood fuse box which should be on a fender, maybe near the firewall. you will have to open the box to see what you are after but there are only a few things in it. hope that helps.
The horn fuse is in the under hood fuse box. It is a 20 amp fuse. Good Luck
Please see my tip at http://www.fixya.com/cars/r6022358-relay_check to check the relay and socket. These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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Thanks for you time but when i posted i thought i 1989 not my mistake so sorry thankyous
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