Factory alarm triggered by radio?

1989 MERCEDES BENZ 190E
222,000 MILES • 2.6L • 6 CYL • 2WD • AUTOMATIC
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MARCO A. MARTINEZ
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  • 2 POSTS
I’ve been trying to install an aftermarket stereo and I’m having trouble with the alarm, there’s two brown wires and one blue wire, I’m not sure where they go into the new harness, all the factory harnesses are cut.
Mar 22, 2023 at 3:20 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Here are the radio wiring diagrams so you can hook up the aftermarket radio and a guide to help test the connections:

https://www.2carpros.com/articles/how-to-check-wiring

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Mar 23, 2023 at 9:09 AM
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