2 mo. ago • 100%

What is this metal connector?

I'm installing a stereo head unit and don't have sound. This blue wire comes from the included harness and is the amp control wire. The control wire on the other connector at the unit also says amp control and isn't connected to anything. I'm assuming I have to connect the two wires and this thing (plus heat shrink wrap...?) will help. I'm unsure if I should use this or cut and strip the wires and find some wire nuts. How do I use this connector, (if it even is one)?

23 comments

The generic term is bullet connector. That's the male side, so you'll need a matching female connector. Did the head unit come with a bag of hardware or anything?

28
- Thanks, solved. I didn't see any loose connectors in the bag. There are generally a lot of dead end wires with caps and various labels.
  
  10
Male end bullet connector specifically. And blue wires in stereos are generally the remote on switch signal line. When you turn on your radio this tells any antennas or amplifiers to turn on and off when you turn off the radio or car.

15
- Thanks, solved. That's why I'm thinking this is important to connect, although I'm not sure why it wouldn't have a female connector on it. All of the reading I've done said the amp power was the issue. Sure enough when I started following the wires, the amp control isn't connected. Blue has several labels on this unit, also bring the Bluetooth antenna wire.
  
  5
  
  Most aftermarket installations just use a splice connector on the 12V that runs to the cigarette lighter.
  
  2
  
  Does your car have an amp? Many don't so your problem might lie elsewhere.
  
  You might be able to get wiring instructions from Crutchfields website. They're great for stuff like this.
  
  1
That is the male side of a bullet connector. You need to either get the corresponding female connector and crimp it on the other wire, then plug them in, or cut it off and use a butt splice to join the two wires.

13
- Thanks! Solved.
  
  5
Please don’t do wiring in a car if you need to ask questions like this. At least get your work looked at by someone who knows his shit.

It’s easy to make mistakes that can set your car on fire.

4
- Please didn't discourage people from asking questions and learning. It's the first step towards becoming knowledgeable about something.
  
  9
  
  Yeah, well maybe your first steps with electronics shouldn’t be with car wiring?
  
  If he asked how to wire a three phase induction cooktop not knowing absolutely anything should I encourage him to electrocute himself?
  
  1
Looks like you stick the stripped wire into the free end, crimp down, and use heat-shrink on the whole thing.

Can look up “crimp connectors” and see what you find.

4
- No its a bullet connector. This is a male end.
  
  9
  
  That makes more sense. I was sure I’d seen this before and it was plugged in as you say but man does it look like it would be terrible at that job. I prefer my interpretation but I’m almost certainly missing something.
  
  1
looks like the female end of a crimp on bullet connector

2
- *Male
  
  4
My Dashcam's hardwire kit had the same connectors, there should be a similar connector on another cable, that doesn't taper towards the tip. Those should fit and sort of "click" together.

2
Permanently Deleted

-1
- No its a bullet connector. Male end crimp style. Designed to insert into a female bullet connector.
  
  5

You've viewed 23 comments.