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Horn blows only when the car is running

2K views 42 replies 10 participants last post by  acardon 
#1 ·
Since I took out the ballast resisters the horn only works when the car is running. The horns worked before with the car off. There was a green, brown and white wire going to the pos side of the resistor I connected them to the pos side of the coil. I have tried every combination of wire hook up but cannot get the horns to work until the car is running. The horn relay has a constant 12v Any suggestions? Thanks in advance.
 
#39 ·
Horn issue is now fixed there is an after market amp meter in the car it was fried I put a volt meter in place of it there is a red and black wire on the back of the meter I was thinking the black wire is a - but it is hooked to the pos side of the batt I jumped the wires together and the horn is now working with the car off.
Thanks For all the help
 
#40 ·
Glad you got it fixed and back to working as normal

Appreciate you getting back to us and letting us know what you found
 
#41 ·
Just tested mine.
I found that horn only works with engine running coincides with me driving. 😁
 
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