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tim's auto repair
tim's auto repair, mechanic
Category: Mercedes
Satisfied Customers: 16033
Experience:  own shop 25yrs
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The horn went out, I ordered a replacement but the old one

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The horn went out, I ordered a replacement but the old one had a three prong insert and the new one only has a two prong. Not sure how to wire in.
JA: What is the model/year of your Mercedes?
Customer: 2011 Mercedes Sprinter 2500
JA: Are you fixing your Sprinter 2500 yourself? What have you tried so far?
Customer: yes, I have tries to attach the wire different ways to see if the horn would work, but it did not.
JA: Anything else you want the mechanic to know before I connect you?
Customer: That's all

Hi, My name is ***** ***** for the delay.
I will do my best to assist you.

do you have power going to the horn?

Customer: replied 28 days ago.

did you order the correct horn?

what wire has the power when you press the horn button?

Customer: replied 28 days ago.
I can get it to work if I hook up the power/hot wire and touch the ground to something, but not if you push the horn only when I touch the hot and neg wires.

you need to find the hot from the plug with the horn button pressed

then just ground the other wire

though i would recommend getting the correct 3 wire horn

Customer: replied 28 days ago.
I will have to wait till I can actually be at the horn, to work this out. I did look for the three wire harness, I can not find it.

Parts InformationOEM Part #Price



To 1/23/12

(###) ###-####-$56.00

Labor InformationSkill LevelMfg. WarrantyStandard

Replace One

B 0.0 - 0.3 hours labor

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Customer: replied 28 days ago.
Thanks, ***** ***** quickly review the information

i dont have a lot of info for this year.

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