E-Class (W211) 2003-2009

Horn Relay Location

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 12-01-2017, 05:20 AM
  #1  
Super Member
Thread Starter
 
jumph4x's Avatar
 
Join Date: Aug 2009
Location: Oakland
Posts: 998
Received 70 Likes on 54 Posts
W210 DRFT BNZ
Horn Relay Location

Hey guys,

I have an aftermarket steering wheel and am in the middle of wiring a manual momentary switch directly to the horn relay.
I've done the work but I may have had the wrong relay targeted because energizing it does not activate the horn.



I created an inline wire harness for relay #2 and tapped into the + energizing contact, giving it 12V.
Do I have the correct relay?
Old 12-01-2017, 09:18 AM
  #2  
Out Of Control!!
 
konigstiger's Avatar
 
Join Date: Jul 2003
Location: North Scottsdale, AZ
Posts: 15,903
Received 4,417 Likes on 3,146 Posts
'71 Pinto

"O" is correct, associated 15A fuse f53b.
Old 12-02-2017, 04:32 AM
  #3  
Super Member
Thread Starter
 
jumph4x's Avatar
 
Join Date: Aug 2009
Location: Oakland
Posts: 998
Received 70 Likes on 54 Posts
W210 DRFT BNZ
Originally Posted by konigstiger

"O" is correct, associated 15A fuse f53b.
I thought so, hmm.

I guess just sending 12V+ to either side of the coil isn't enough. I wonder if the opposite side isn't grounded or something.
I'll try completely disconnecting the coil contacts from the relay plug and manually grounding.
Old 12-07-2017, 10:57 PM
  #4  
Super Member
Thread Starter
 
jumph4x's Avatar
 
Join Date: Aug 2009
Location: Oakland
Posts: 998
Received 70 Likes on 54 Posts
W210 DRFT BNZ
I verified the relay is getting energized when wired into my +12V directly. That should solve that. Thanks again.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Horn Relay Location



All times are GMT -4. The time now is 02:18 AM.