the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

vacuum door locks problem


Post ReplyPost New Topic
< Prev Topic Next Topic >
2001eclipse 
Member - Posts: 29
Member spacespace
Joined: July 09, 2007
Location: California, United States
Posted: October 23, 2007 at 2:18 AM / IP Logged  

One of my friends decided that he wanted to install his own alarm in his 93 400E benz. He mis-understood how to wire up vacuum type door locks. He located the wire he thought would control the lock switch only, and tried to test it by touching that wire to ground. Now all of his locks dont work unless he uses the key in the trunk.

I dont have much experience with vacuum type door locks and the only resolution I could think of was to check all the fuses. We found a blown fuse under the hood and replaced it and still no luck.

Does anyone know if there is a quick fix for this or is this something that needs to be repaired at a shop?

howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: October 23, 2007 at 2:46 AM / IP Logged  

Your friend broke the first law of auto-electrical work, grounding a wire without knowing it's function or using a buffer such as a snap-on testlight. Use yellow wire from trunk, check fuse position for corrosion on terminals-very common, its possible that the switches on both front door pumps have failed but unlikely. If vehicle has earlier 1 wire system, it's blue on the right, green on the left and yellow from the trunk. These wires change polarity on lock and unlock.

Just to complicate things, if your fusebox has Littlefuse plastic blade fuses rather than ceramic, you have a two wire neg system, leads coming up under leading edge of front seat (driver side) to join main loom going front to rear, black lock and hold for window/roof close, blue unlock, latch the door, remove and disconnect door contact, remove key and for God's sake go to ground through a test light.


Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Thursday, October 31, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer