Help with a hirn

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
Hey all I'm standing out here in the freezing cold trying to figure out what my horns not working it's an 87 square body TBI 350 I powered the horn relay on the orange wire continuity from the green wire out through the fuse box to the horn but no continuity from the horn relay pin to the horn pin on the steering column, I drove my multimeter in there and then pressed down the pin I'm actually going to remove it right now and get bare metal on metal to make sure but I think there's a break or disconnection somewhere on the black wire going from the relay to the steering column horn switch where can I find this?

Thanks
 

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
Ok thought i found it but no, there was some loose pins in a connector going up to the steering column fixed those actually have continuity through like blinker right turn signal or whatever up to an allen wrench that i drove in the horn button from the relay. However no matter what I do I cannot get continuity from black wire up to horn button. Is there possibility that I may need to pull the steering wheel? Because I feel like my problem lies somewhere in the steering column
 

Matt69olds

Full Access Member
Joined
Jan 8, 2018
Posts
2,850
Reaction score
4,712
Location
Central Indiana
First Name
Matt
Truck Year
81
Truck Model
GMC 1/2 ton
Engine Size
455 Olds
Put everything back together. Unplug the turn signal switch connector. Find the black wire in the truck side of the turn signal switch connector. Grind that wire. If the horn sounds, the problem is either the turn signal switch itself of missing parts in the coulumn. Either way, it going to take some exploratory surgery to find out what is the problem.
 

GXPWeasel

Full Access Member
Joined
Nov 5, 2019
Posts
645
Reaction score
1,288
Location
Kansas
First Name
Greg
Truck Year
1982 | 2015
Truck Model
Sierra C15 | Silverado Z71
Engine Size
5.0 | 5.3
LOL. I read the title, and thought you wanted help with a Hernia. :buttkick:
I can't offer much help with a horn. Mine doesn't work on my '82 because the steering wheel is original, and sucks.
 

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
Put everything back together. Unplug the turn signal switch connector. Find the black wire in the truck side of the turn signal switch connector. Grind that wire. If the horn sounds, the problem is either the turn signal switch itself of missing parts in the coulumn. Either way, it going to take some exploratory surgery to find out what is the problem.
Ya I've narrowed it down to the steering column just got a wheel puller this is pretty lame all for a horn too much damn work luckily I got a parts truck sitting in my driveway
 

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
Fixed it it's a bad spring in the steering column not the one for the horn button there's a second one underneath the steering wheel in the selector switch thought I was going to have to change the whole switch out which is a pain but was able to pry the back of it open and put a new spring inside
 

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
So ya messed around today fixing lights put a new alternator in, was feeling pretty good about the horn, then i discovered my blinkers don't work now first thought was that large connector with the bladed pins that had some loose ones on steering column and that's part of the problem because if I squeeze it together the right hand blinker works can't get the left hand one to work no matter what The lights just dim when I flick it. Any ideas on this connector with the loose pins? I've taken it apart like 20 times move the pins down put it back together they just push up. And I don't know how the circuit works for the blinkers I assume if the right hand side works the left hand side should or the problem is the selector switch?
 

yepyep

Full Access Member
Joined
May 8, 2021
Posts
58
Reaction score
24
Location
the moon
First Name
joe
Truck Year
1987
Truck Model
v20
Engine Size
350 tbi
So alittle update here got the blinkers working sort of right hand side works,left hand sets the hazards off UNLESS i turn head lights on then it does nothing.....what in the actual **** if anyone has any ideas or has seen this before plz gimmie your 2¢...

Tore column down again can find nothing wrong with switch, loose connectiongs arent loose anymore, changed flashers im at a loss.
 

Forum statistics

Threads
48,665
Posts
1,074,152
Members
43,333
Latest member
duncan_schawalder
Top