Defender ISO Wiring Adapters

MUD AudioSKU: CT20BM02

Wiring Adapter Options: Flat Pin

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In stock

Our ISO adaptor harnesses are designed to be used when replacing the various factory fitted head units used by Land Rover over the years in the Defender.

The harnesses will convert the respective Land Rover stereo wiring harness used on different Defender models into the industry standard ISO audio wiring style plugs typically found on modern head units. The ISO harness provides a plug-&-play solution for any Defender stereo upgrade.

The Flat Pin ISO adaptor is used when replacing the factory fit radio-cassette head unit found in the 200 and 300 Tdi Models.The Round Pin ISO adaptor is used when replacing the factory fit CD/Radio head unit found in the Td5 models.The ‘Puma’ ISO adaptor is used when replacing the factory fit Alpine head unit found in 2.2 Tdci models from 2011/12-onwards. *See notes below.*Important! Please note that pre-2012 Puma/Tdci models (2.4Tdci) were fitted with the same Alpine head unit as the later cars, except the earlier model Defenders were equipped with factory ISO audio connections on the wiring harness. No ISO adaptor harness is needed with these earlier Alpine head units and earlier Land Rover branded CD player because the ISO connections already exist in the dashboard. Any aftermarket head-unit will plug into the factory ISO connections.  

Later 'Puma' Defenders made life more difficult by using the large grey audio multi plug connector which requires the 'Puma' ISO adaptor to convert the LR grey 'Puma' connector into ISO. The change of connector from factory ISO to the Puma plug was effectively in line with the engine revision from 2.4Tdci to 2.2Tdci, however, changeover model years traditionally result in a mix of components! If you have a 2011/12 model Defender we always advise you remove the head unit to check the head unit wiring and confirm whether you need an ISO adaptor or not. 

If your Land Rover has had its factory installed head unit replaced with an aftermarket head-unit, irrespective of age, then there’s a good chance you will have already have ISO connections on the back of the head unit and won't need to use an adaptor harness.  The only way 100% to tell is to remove the head-unit and check.

A common enquiry we receive is from someone who has bought a secondhand Land Rover Alpine head unit and wants to know how they can wire it into their Defender. The factory fit Alpine head units uses a specific harness to connect between Alpine's own small connector on the back of the head unit and the Land Rover audio connector. There isn't currently any aftermarket adaptor for these units so if the head unit didn't come supplied with its original adaptor harness (they typically don't!), then the only solution is to get hold of the Genuine Land Rover harness. There are two part numbers for the Land Rover harness: LR040845 (head unit without Bluetooth) & LR040846 (head-unit with Bluetooth). The cost of either harness is £70+ so our advice would always be not to bother with secondhand Alpine units, because they're more hassle than they're worth! 

Want more information on how to select ISO adapters? Check out our blog for all the info.

We know that when you shop online you want your order as soon as possible. Choose DHL shipping in the checkout and order before 2pm then you’ll get your stuff the next working day.

On smaller items we also offer a 2nd Class postage service. This normally takes 2-3 working days to show up at your door. If you’re in a rush go for the DHL option for a fully tracked service.

Big Stuff! Unfortunately, our Side Panels, Bulkhead Bars and longer lengths of Cargo Tracking are too big for DHL to handle. We generally use UPS or Fed-Ex but that’s on an ad-hoc basic so you need to order before 12 to get a next day service.

We charge the same rate to any UK address, which includes Highlands and Islands and Northern Ireland. We do this because we think its unfair to charge more just because you live remotely, lets be honest if we could, we’d live there too. In exchange please be patient if your parcel takes more than one day to arrive.

European Shipping

We use DHL to ship to all our European customers, this can range from a 1-5 working day service. The good news is most parcels arrive within 3 days of shipping. If you’re lucky enough to live in France, Germany or Belgium you might even get your parcel the next day.

Once you’ve ordered DHL will be in touch by email with tracking details. If you’ve chosen Royal Mail shipping then you should receive your parcel in around 10 working days (note this can be up to 28 working days).

VAT Numbers: If you have a VAT & EORI number please contact us before you check out.


Important information for customers within the European Union

Following the UK’s withdrawal from the European Union there have been changes to import and export practices. Customers within the EU will no longer pay UK Tax. 

When the parcel arrives within your country you may be liable to pay both local VAT, import duty and admin charges. Please do not ask us to estimate the cost of any additional costs once the parcel has the left the UK. These charges are levied locally, they will vary from country to country.

As the buyer you are responsible for paying these charges, which must be paid before your goods are delivered. If you decline to pay the charges then the goods will be returned to us. Goods returned as a result of payment failure will be refunded. Please note we can only refund the cost of your original order. Delivery costs will not be refunded. Refused parcels may also levy re-entry fees into the UK, they will also be deducted from your refund. If you are thinking of rejecting a parcel due to customs charges, we strongly recommend you contact us first before you reject the parcel. 

If you require further information, we recommend contacting your local tax office.

Please Note: If you live in The Alps or somewhere equally beautiful and hard to get to, we might have to use DPD or TNT to deliver. They should be just as quick.

USA & Canada Shipping

American & Canadian customers can expect a 2-3 working day service with DHL, depending on whether your East or West Coast.  DHL will be in touch via email with all the info you need once you’ve placed your order.

Rest of the World Shipping

The good news is we ship to pretty much everywhere (we don’t ship to Russia, sorry!).

The best service to choose is DHL, most parcels are delivered within 4 working days. This service is fully tracked and DHL will email you with all the details as soon as they’ve collected your ‘stuff’

If your parcel is light enough, you’ll be offered Royal Mail shipping in the checkout process. This will be delivered locally by your nearest post office. We’ve found that some countries have better postal systems than others. It can take up to 20 working days for post to arrive, so if you are in a rush please choose DHL in the checkout.

Customs & Duties

All packages imported to your country may be subject to customs, taxes or other fees. You are responsible for all applicable customs, duties, taxes and fees charged by your government.

We cannot guarantee that you will or will not be charged any customs taxes or duties.

If you’re worried about possible charges please contact your country's customs office prior to purchasing for respective charges and rates on packages coming from outside of your country.

If you decline parcels locally due to customs duty/tax charges then the goods will be returned to ourselves. Note this will incur further charges which we will debit from your refund, this can often be more than the original customs charges so we would advise you not to do this. If you have made a mistake with your order/ cannot pay the import duty charges then please get in contact with us and we will try to work out the best way forward for you.

Note: Please don’t ask us to declare your goods as a gift, or to value your items at less than they are worth. We’d love to be able to help you out, but we don’t want to end up in jail!

Returns & Exchanges

You can return items that you are not happy with within 28 days from purchase. If you’d like to return something or you believe you have a faulty item please contact us via email and we we’ll do our best to resolve the issue with as little fuss as possible.

Once we receive your returned parcel, we will process everything accordingly and keep you updated via email. We aim to refund customers the same day that an item is returned. If you originally paid by PayPal then you should receive the refund instantly. However, if you paid by sage pay using a credit or debit card it can sometimes take a few days for refunds to be credited.

If you believe you have received something in error or a part is missing from your delivery please contact us immediately. Packing errors can only be rectified if we have been informed of the error within 28 days of the parcel being received.

Payment & Security

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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