Where is the horn relay located on a 1990 Ford Bronco?

Behind the RH side of the instrument panel, near the hazard flasher (page zone 151-8-C 1, connector page 150-11).

Which fuse powers the horn and cigar lighter?

Fuse 16 supplies both the horn circuit and the cigar lighter; the cigar lighter has voltage applied at all times through Fuse 16.

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1990 Ford Bronco Horn & Cigar Lighter Circuit (EVTM 44-2) - Locations & Operation

Ford EVTM horn and cigar lighter circuit, page 44-2, component locations and how the circuit works

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Ford EVTM page 44-2 for the horn/cigar lighter circuit; lists fuse panel, horn relay and horn locations and explains horn current path from Fuse 16 and cigar lighter from Fuse 6.

AI caption April 2011 · Photo 674 of 1799

This is page 44-2 of a Ford electrical and vacuum troubleshooting manual (EVTM) covering the Horn and Cigar Lighter circuits, uploaded as applying to a 1990 Ford Bronco. The page contains a component location table listing the Fuse Panel (behind LH side of the instrument panel), Horn Relay and Horn Relay Jumper (behind RH side of the I/P near the hazard flasher, page zone 151-8-C 1, connector page 150-11), Horn Switch (inside the steering wheel), and Horns (forward of the LH radiator support, page zone 151-1-F 8). A note refers readers to Location Index page 152-1 for connector, diode, resistor, splice, ground and base part number descriptions. The 'How the Circuit Works' section explains: without speed control, pressing the horn switch sends current from Fuse 16 through the switch to the low- and high-pitch horns; the cigar lighter has voltage at all times through Fuse 16 and heats when its contacts close; with speed control, pressing the horn switch grounds the Horn Relay coil through G203, energizing the relay so current from Fuse 16 sounds the horns. A boxed note directs readers to section 35-80 of the shop manual for further diagnostics.

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Frequently asked questions

Where is the horn relay located on a 1990 Ford Bronco?: Behind the RH side of the instrument panel, near the hazard flasher (page zone 151-8-C 1, connector page 150-11).
Which fuse powers the horn and cigar lighter?: Fuse 16 supplies both the horn circuit and the cigar lighter; the cigar lighter has voltage applied at all times through Fuse 16.
Where are the horns located?: Forward of the LH radiator support (page zone 151-1-F 8).
How does the horn work with speed control?: Pressing the horn switch grounds the Horn Relay coil through G203, energizing the relay so current flows from Fuse 16 to sound the low and high pitch horns.
Where can I find more diagnostic information for this circuit?: The page refers to section 35-80 of the shop manual and to Location Index page 152-1 for connector, diode, resistor, splice, ground and base part number descriptions.