Horn relay test question

Reply Subscribe

Thread Tools

Search this Thread

Apr 8, 2008 | 02:13 PM

swisscheese

Thread Starter

Member

Joined: Nov 2001

Posts: 245

Likes: 1

From: somewhere over the pond

Car: '91 Z28

Engine: LB9

Transmission: T5

Axle/Gears: 3.42

Horn relay test question

I found this and tested it as written:

Quote:

check the ohms, should be between 10 and 20 ohms, middle terminal (A) is where you apply voltage then use one of the others to ground the coil.

I took the relay out and measured from connection A to B (from +12V to the connection where the horn switch would be) and got 40 ohms. Does this mean that the relay is bad???

Thanks for the help!!!

Apr 9, 2008 | 09:15 AM

BigBadLou

Supreme Member

iTrader: (3)

Joined: Jul 2004

Posts: 2,989

Likes: 9

Car: '91 Z28 convertible

Engine: TPI

Transmission: T5

Axle/Gears: 3.27 posi disc

Re: Horn relay test question

Are these the instructions for that relay specifically?
If not, then the resistance might be correct.
The main question is: does the relay actuate when you put 12V on it? That's the ultimate test.

Lou

Apr 9, 2008 | 03:34 PM

swisscheese

Thread Starter

Member

Joined: Nov 2001

Posts: 245

Likes: 1

From: somewhere over the pond

Car: '91 Z28

Engine: LB9

Transmission: T5

Axle/Gears: 3.42

Re: Horn relay test question

Thats what I found in an other thread regarding the horn relay but I will check the other things too next weekend.

Apr 12, 2008 | 11:57 AM

swisscheese

Thread Starter

Member

Joined: Nov 2001

Posts: 245

Likes: 1

From: somewhere over the pond

Car: '91 Z28

Engine: LB9

Transmission: T5

Axle/Gears: 3.42

Re: Horn relay test question

Ok, finally had the time for some further test. There is no current coming from the buttons when applied. However the buttons still make a "click" while pushing, so I'm not sure if the problem are the buttons.

How does the current flow to the buttons and on to the horn relays? Probably there is something to check too?