yo, yeah, check for 12v DC at each horn;
and then;
Relay Location in an 89; "...under the middle of the dash, but it's probably not the older metal 3-terminal relay attached to the cruise module; it looks more like the FP relay. If that's what you have, I suggest you chop it (& the FP & EEC PWR relays) off and replace it with a Bosch/ISO; But remember that it's possible for your horn relay to be working perfectly & the wiring or the horns themselves could be bad...."
Source: by Steve83 (Steve, That dirty old truck) at Ford Bronco Zone Forums http://broncozone.com/forums/index.php?showtopic=12013
I don't have access to my stuff @ home right now; so I can't look at a wiring diagram; have a Haynes or Libray card number? if so;
Repair Manual, Mostly Chilton; many local library's offer free online access for their members; just log-in w/your library Card # and password; incl. all Broncos, & many MAKES! 1951 to 2009; some years (85-96, I believe) include: FULL Technical Service Bulletins and Recalls, Labor Hours per repair (plug in appl info); Wiring Diagrams, Vacuum Diagrams (in DRIVEABILITY AND EMISSIONS CONTROLS Section), Specifications (torques, etc.) & Maintenance Intervals
Source: by arrc.epnet.com http://arrc.epnet.com
and then;
Relay Location in an 89; "...under the middle of the dash, but it's probably not the older metal 3-terminal relay attached to the cruise module; it looks more like the FP relay. If that's what you have, I suggest you chop it (& the FP & EEC PWR relays) off and replace it with a Bosch/ISO; But remember that it's possible for your horn relay to be working perfectly & the wiring or the horns themselves could be bad...."
Source: by Steve83 (Steve, That dirty old truck) at Ford Bronco Zone Forums http://broncozone.com/forums/index.php?showtopic=12013
I don't have access to my stuff @ home right now; so I can't look at a wiring diagram; have a Haynes or Libray card number? if so;
Repair Manual, Mostly Chilton; many local library's offer free online access for their members; just log-in w/your library Card # and password; incl. all Broncos, & many MAKES! 1951 to 2009; some years (85-96, I believe) include: FULL Technical Service Bulletins and Recalls, Labor Hours per repair (plug in appl info); Wiring Diagrams, Vacuum Diagrams (in DRIVEABILITY AND EMISSIONS CONTROLS Section), Specifications (torques, etc.) & Maintenance Intervals
Source: by arrc.epnet.com http://arrc.epnet.com
