|
Re: 73 dodge b100 horn not working | Joined: Aug 2001 Posts: 12,107 Likes: 37 Maniac | Maniac Joined: Aug 2001 Posts: 12,107 Likes: 37 | I stand corrected on several points. It appears your horn does have a separate ground wire and it is a switched circuit. I was looking at a 1982 Dodge truck wiring diagram and I wrongly assumed the wiring for the horn circuit would be the same as your van. My apologies for any problems my bad advice caused.
Windows- they're what make a van worth owning! | | | Re: 73 dodge b100 horn not working | Joined: Jan 2018 Posts: 72 journeyman | journeyman Joined: Jan 2018 Posts: 72 | No problem, Could you see the pics. alright? Got the FSM so if you need anything else, let me know! I'm hoping mine is just the horn also , don't think I have anything funky in the wiring either! HONK ON!! | | | Re: 73 dodge b100 horn not working | Joined: Jan 2018 Posts: 25 newbie | newbie Joined: Jan 2018 Posts: 25 | Your images will certainly help me! To say my dash wiring was modified is modest, a previous owner dremeled a hole in the dash to run new gauges...shame he didn't have this diagram. Lots of tapping hots from odd places instead of the fuse box...
Also, to anyone with horn problems, there's a neglected point of potential under the steering wheel. That green hot wire comes up to a spring loaded roller contact, which makes contact with a metal ring plate behind the steering wheel. The contact rolls along that ring as the wheel is turned, always in contact. The ring is where that black wire under the horn cap goes. The roller can wear and eventually lose contact. So if you read hot at the harness connector but not at the black horn wire, that's the likely failure point.
Last edited by Miyagi; January 31st 2018 2:02 am.
| | | Re: 73 dodge b100 horn not working | Joined: Jul 2015 Posts: 34 newbie | OP newbie Joined: Jul 2015 Posts: 34 | Your images will certainly help me! To say my dash wiring was modified is modest, a previous owner dremeled a hole in the dash to run new gauges...shame he didn't have this diagram. Lots of tapping hots from odd places instead of the fuse box...
Also, to anyone with horn problems, there's a neglected point of potential under the steering wheel. That green hot wire comes up to a spring loaded roller contact, which makes contact with a metal ring plate behind the steering wheel. The contact rolls along that ring as the wheel is turned, always in contact. The ring is where that black wire under the horn cap goes. The roller can wear and eventually lose contact. So if you read hot at the harness connector but not at the black horn wire, that's the likely failure point. What year is yours? I know exactly what you’re talking about but mine isn’t ever hot. I was under the assumption that it was a ground that when depressed and made contact it grounded and completed the circuit. | | | Re: 73 dodge b100 horn not working | Joined: Jan 2018 Posts: 25 newbie | newbie Joined: Jan 2018 Posts: 25 | Mine is a 74, and if I remember the diagram appropriately, for me, anyway... The power flow is battery + --> ignition switch RUN and START (I think. Definitely RUN) --> fuse box HORN/RADIO/B-UP --> the horn itself --> horn switch. The switch makes chassis ground via the steering column when pressed.
In Key RUN, you should be able to touch anything cab-side of the firewall plug to ground and get a spark and usually a toot. If you're between the firewall plug and the fuse box, it should still be sparky, but you're cutting out the horn.
I lost my horn switch, so have a spade connector just free hanging-- for awhile, it hung in such a way that bringing the turn signal lever down, it would touch the lever in the middle of the arc of motion and TOOT for a spit second. | | | Re: 73 dodge b100 horn not working | Joined: Feb 2018 Posts: 49 newbie | newbie Joined: Feb 2018 Posts: 49 | My 1979 b200 is the same key off no horn
1979 Dodge B200 wrangler factory authorized van conversion. 360 cid 727 auto trans NP203 full time 4 wd | | | Re: 73 dodge b100 horn not working | Joined: Jan 2018 Posts: 21 stranger | stranger Joined: Jan 2018 Posts: 21 | I have a 72' dodge van, key on for horn. I installed horns in the rear many years ago using a head light high/low beam floor switch. I installed it next to the floor high/low beam switch that was wired strait from the battery. The reason was, i wanted to be able to toot with the key off because many times I would have to alert someone for backing in to me while I was sitting in a parking lot. You are right the steering wheel horn is operated by it's grounding while pushing the center button. There is a roller wheel on the blinker control for the ground that sometimes may need a little cleaning along with its copper contact on the wheel it's self. Info: Most of these older autos need all the grounds removed and cleaned for an improved connection, specially on the computer ones. | | |
0 members (),
14
guests, and
1
robot. | Key: Admin,
Global Mod,
Mod | | Forums68 Topics35,841 Posts538,388 Members12,735 | Most Online177 May 8th, 2013 | | | |
|