Fuse box 87 el camino where is it located - 1987 Chevrolet El Camino

SOURCE: Ignition Switch

Hello 85chevy,
Thankyou for choosing FixYa.com my name is David this should help you with your problem
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Ignition Switch Inspect | Test | Replace The ignition switch is usually mounted to the steering column and is operated by a linkage rod.
NOTE On column-mounted ignition switches, don't confuse the switch with the lock cylinder and keys. The ignition switch is not normally visible.
On some vehicles, the steering column support has to be removed and the column lowered to find the ignition switch. On others, the switch is accessible under the dash.



The ignition switch is operated by the key switch. Courtesy of Ford Motor Company.
To replace the switch:

• Remove the ignition switch wiring harness.
• Unbolt it from its position.
• Bolt the new switch into position.
• Attach the witing harness.

SOURCE: giovanni

I have a 1983 Royal Knight SS. Had the same problem. Had my wiper motor and washer pump replaced. works like a dream now. replaced my original combination turn signal wiper switch on steering column and now have good working intermittent wipers. It is great to see driving in the rain now. Jackson  in ATL

SOURCE: 1989 el camino

This Wrong,

Do you have the only 1989 El Camino built? What year is it really. This information will make it easier to trouble-shoot your problem.

SOURCE: Cannot locate the horn relay on my 85 El Camino.

Found these documents for you.

85 ElCamino1
85 ElCamino2

In fact there IS a horn relay. I have circled the circuit you are looking for in red.
I would search under the dash on driver's side.

Find the Ignition Harness and follow the wires back to the firewall.

Please download and save these pics to your hard drive - as they are stored on my personal FTP storage, and i will remove them in 24 hours.

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SOURCE: rewiring 1959 chevy el camino

Are you needing advice, links, tricks, or all of the above?
If it's advice you want:
If you are not buying an after market harness and all of the oem wiring is intact replace one wire at a time from the component all the way back to the fuse box. Its tedious but, it's a sure fire way to get it right the first time.

Secondly, I'd by a haynes manual or some other wiring diagram. Study it for at least a couple weeks or until you are completely comfortable taking on the task.

Color code your wires and label both the old and new ones with paper tape and a permanent marker so that you know what each one is for.

Last but not least, make sure that the battery is disconnected... ;o)