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how to install radio wiring harness in mk3 golf

by Zackery Grimes Published 2 years ago Updated 1 year ago
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Why get a golf stereo wiring diagram?

Your Golf stereo install goes much easier when you’ve got our Golf stereo wiring diagram. When you are removing your Golf radio or trying to upgrade your speakers, the last thing you want to do is hunt for a stereo wiring diagram.

How do I upgrade the stereo in my Volkswagen Golf?

You can upgrade the Golf stereo using this guide to connect the power wires and amplifier wiring, or change out the Golf speakers. You can use this Golf stereo wiring guide to complete your Golf stereo upgrade or the speakers in your Volkswagen.

How to wire up rear speakers on a VW Golf?

When you need to wire up the rear speakers, you can use our Golf stereo wiring schematic to get the job done. When installing a Golf stereo into this generation of VW, you’ll want to use a mounting kit or bracket when you are using a flip up screen or a motorized single DIN system.

Do I need a golf stereo install kit?

These Golf tweeters are the right color wires assuming you don’t have a premium Monsoon stereio system installed or navigation. For those looking to upgrade to a double DIN, you definitely need a Golf stereo install kit. This applies even if you are sticking to a single DIN system.

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Where is the ECU plug on a MK3?

On a MK3 loom I run the large ecu plug in with the wiper loom on the driver side , leaving the ecu grommet on the passenger spare for the other loom. On the MK1 again I use the wiper loom hole into the scuttle, though you may want to make the hole larger if its an older car.

How to wire a glow plug on a diesel?

If you have an early one without a supply pump use a 67/80/167 fuel pump or MK1/2/3 glow plug relay in your fuel pump socket , and run your glow plug power with suitable inline fuse to large spade N for CE1, or Z/1 for CE2. This will make it as per OEM MK1/2/3 diesels. If you have a later one with a pre-supply pump, you can either add your fuel relay above the fusebox triggered from T10w/7 like how it is on a MK4, or my personal preference is use the fuel pump relay socket for this then that way you can use a factory mk1/2/3 GTI rear wiring loom to power the pump and instead fit the glowplug relay above the fusebox. The diesel engined cars have the ECU relay inside the car, I would put it above the fusebox as per the notes below. Also note T6/4 differs on the diesel lumps, on the petrol engines its permanent live but in the diesel it expects a ECU relay power feed. So feed this with the output from your external ECU relay along with all of the other ECU relay power feeds.

How to wire a relay on a DBW loom?

With the DBW looms you have 2 choices with the main ECU/coil power rela y, either leave the factory relay box in place and mount it to the scuttle or move the relay to the fusebox area. I wouldn't recommend you use the factory socket on a CE2 fusebox, it is unlikely to be able to take the load. If you move the relay the old purple trigger wire from the ECU will need to go to the ECU relay pin 85. When mounted above the fusebox you could use a 109 relay or a standard switched live relay see the notes below. You can of course just ignore the purple wire and wire it as per standard AGU looms if you do that the ECU will flag a code.

What size plug do you need for an MK4 loom?

All you really need from the donor MK4 are both halves of the ECU loom, then to make the loom my way you will also need a 10 or 14 pin plug cut out of a donor MK4 so the 2nd half of the ECU loom can simply plug in. Early MK4 looms use a 10 pin plug, later looms use a 14 pin.

How to wire a CE2 fuse box?

For CE2 fusebox this is easy, pop a wire to W/1 and usually you are done. For GTI MK2, all MK3 and corrado this pin is always active. For poverty spec MK2 you will need to either change the clocks for GTI ones, or you can add the speed sensor to the back of the clocks. You might need to change the clock wiring as well, the MFA stalk wires are not fitted on non-GTI but I'm not 100% sure on the VSS signal wire. It runs from U2/2 on the fusebox to pin 7 on the clocks anyway.

Can you live without a DFM wire?

you can live without the DFM wire afaik, but I always put it in for my customers as I also run the blue alternator charge wire with the right plug to match the MK4 alternator cabling to make life as easy as possible. To do this on a MK1 or MK2 I move the alternator blue wire from the headlight loom to the engine loom, MK3 Golf, Corrado and a few others already have the alternator wire in the engine loom so sorted already. For the alternator blue wire on CE2 its pin F/3, CE1 its D/4.

What pins do you need for VAG-COM?

Note all you need for basic diagnostics with VAG-COM/VCDS is live, earth and K line wires to pins 16, 4 and 7 though.

Where are the speakers on a golf cart?

Luckily, the front Golf speakers are installed into the door, which make them easy to upgrade. Likewise the rear speakers are mounted into the rear doors, which makes upgrading your Golf speakers easy overall.

Do you need a bracket for a golf stereo?

Because the factory navigation system does not use a double DIN layout, you’ll still need a bracket to complete your install. When wiring up the aftermarket radio to complete your Golf stereo install, you will need this Golf stereo wiring guide.

Do you need a wiring diagram for a golf stereo?

For Golf stereo enthusiasts with an existing premium Monsoon system , you’ll need the specific wiring diagram here. When installing an aftermarket amplifier, you’ll need a separate power and ground wiring installation for proper operation.

Can you wire up rear speakers on a golf club?

Luckily the speakers remain in the doors, making upgrading your Golf speakers a snap. When you need to wire up the rear speakers, you can use our Golf stereo wiring schematic to get the job done.

Do you need a color coded key for a Monsoon Golf stereo?

There’s a few different options when it comes to this year range of Golf. Unfortunately if you happen to own a premium sound system, this wiring will not apply. Because the Monsoon Golf stereo system utilizes a custom wiring box, you’ll need a color coded key to upgrade or install any stereo system.

Can you upgrade your golf stereo?

Changes to the next generation of Golf included it’s fair share of interior and exterior upgrades. These changes made it slightly difficult to upgrade your Golf stereo however.

Can you upgrade the speakers on a Golf?

The front speakers are unfortunately mounted in the dashboard, which can make it difficult to upgrade. When looking for a Golf speaker upgrade, you should remove your factory units first. Because this early version of the Golf does not include a switched power signal, it’s best to use the ignition column for this purpose.

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