Untitled Document
Online Payments
Due to increased demand for our services, current lead time is FOUR to FIVE weeks for custom wired assemblies. Thanks for your patience. Please read our terms and conditions prior to placing your order. Click here for our shipping policies and shipping rates.
 Store FrontAccountSearchProduct ListBasket Contents Checkout 
Sign In

Welcome to
our online store!

Prewired Assemblies

  Prewired Strat Assemblies
  Prewired Tele Assemblies
  Prewired Jazzmaster Assemblies
  Prewired PRS Assemblies
  Prewired Bass Assemblies (Passive)
  Prewired Bass Assemblies (Active)
  Prewired Assemblies for Gibson Style Instruments

Guitar Electronics & Modifications

Hand Crafted Pedals



Join Our Mailing List

Prewired Jazzmaster - JM-180 Two Zone Wiring

Quantity in Basket:none
Code: JM180

Shipping Weight: 0.00 pounds
Copper Shield:
Volume Kits:
Bracket For Roller Pots:
Roller Knobs:
Bridge Pickup:
Neck Pickup:
Tone Caps:
Accessories (Vol/Tone Knobs + Pickup Covers):
Untitled Document


JM180 Jazzmaster® 2 ZoneWiring Harness

Introducing a totally cool mod for you Jazzmaster® that requires absolutely no visual changes to your instrument. Your pickup will have 2 modes: normal gain and high gain! No batteries, no preamps, just 2 version of a pickup in one. Curtis Novak's amazing JM180 pickup is built on his very popular JM-90 platform, but takes this great pickup to a whole new level. Like with his JM-90 this will fit in a standard Jazzmaster pickup route.

Here's the deal. I can't tell you how many serious Jazzmaster players have told me they NEVER use the upper rhythm, it is just too dark, or it sounds like someone stuffed cotton in your ears... So Curt got the idea of this tapped JM pickup and we worked together to redesign the wiring for the upper rhythm circuit converting it into a high gain lead circuit with its own separate volume and tone. So when you slide the switch to the upper circuit you will get the Full JM-180. Curt came up with the name JM-180 because it is 2 full JM-90's in one, but also it does a complete 180 on the dark rhythm circuit making it a over driven lead circuit, without the need of an overdrive pedal.

Special Pots
Please note we are using special pots and caps for this circuit not available from the usual guitar parts suppliers. Curt and I agreed to get the best tone out of the JM180 pickup, we should not use the standard 1M and 50K pots normally found in the upper circuit. After much testing we both agreed the optimal value would be 500K audio taper for the volume, and 500K linear taper for the tone but we needed these pots to fit the upper circuit's mounting bracket and have a solid shaft to take the roller knobs. Luckily we were able to score the perfect pots that have solid shafts are are the exact same size as your traditional jazzmaster mini-pots!!

Special Cap for the famous Clapton Woman Tone!
We are using a special value orange drop capacitor that will give you that highly sought after and famous Clapton Woman Tone that works perfectly for the high-gain circuit. The cap value is lower than normal. 022 uf and will enable you to rotate your roller tone knob fully counterclockwise and it will not sound muddy, but instead will give you a really creamy distortion when pushing the amp to overdrive. Please note the upper circuit is totally vintage and still uses a .033 uf capacitor.

Just like all our other assemblies, these prewired Jazzmaster® assemblies use only the finest electronic components, and are even 'period correct' with regards to the color coding of the vintage style cloth wire. All components are treated with Caig Deoxit for long trouble free use. They feature our custom made copper shields, only available at Rothstein Guitars. Fair warning, these will not be inexpensive but they will be of the highest quality you can find and worth every penny.

Enough with talking about it Here are 2 different sound files switching between the JM-90 and the JM-180. The first part is the JM-90 coil tap on the lower circuit, the second is the full JM-180 on the upper circuit.

High Gain Mode[ Rock Sample ] | [ Jangle Sample ]

If that was to high gain I could wind it less here it is wound half as hot.

Normal Mode (Medium Gain) [ Rock Sample ] | [ Jangle Sample ]

Click on thumbnail to see larger image

How To Use This Online Ordering Page

  • All assemblies are custom built to your specs. This is an opportunity for you to select the options you want.

  • You will notice, the base price of a prewired assembly is $0. You will then proceed to add attributes to customize your prewired assembly. Some of the attributes are mandatory, and some are optional. To determine the final price, simply add the product to your online shopping basket, and then click the "basket contents" link in the navigational header at the top of the page. Have no fear, you are not committed to purchasing it until you actually use the checkout feature.

  • Mandatory Attributes - the following attributes are required to place an order for a custom prewired Jazzmaster assembly:
    • Top Quality Electronic Components & Professional Wiring including
        • CTS Pots - all treated with caig deoxit for long trouble free operation
        • Genuine Switchcraft Switches (both toggle and slide)
        • Switchcraft Jack
        • SBE Orange Drop Capacitors
        • Vintage style cloth wire in the correct colors (black, white, green, red, yellow and blue)
        • Price includes the pickup covers (we stock white only)
        • Pro wiring job
    • JM180 Bridge pickup - pickups are mandatory with this assembly
    • Neck Pickup - pickups are mandatory with this assembly (see list below)
    • Mounting bracket for the 2 roller pots
    • Copper Shield - very high quality 2 mil thick copper pickguard shields specifically for the Jazzmaster®
    • Roller Knobs for the roller pots.
    • Accessories (Volume and Tone Knobs for the lead circuit + pickup covers) - select between white, black and cream.
    • Pickguard -c hoose between Tortoise (USA vs. import), Gold Anodized (USA), white (USA), black (USA) and mint (USA).
      • Note 1- if you want us to special order another color, we can do so if you indicate such in the comments field.
      • Note 2- you can contact us via e-mail to arrange to send us your pickguard (andy@guitar-mod.com)
  • Optional Attributes - In addition, you may add the following optional attributes:
    • 2 Volume Kits: a treble retention circuit will be added to the volume pots on both the upper and lower circuits, which will prevent the loss of highs experience when you lower your volume.

Neck Pickups

  • If you want killer Jazzmaster pickups, then you must check out Curtis Novak pickups. These are amazingly toneful pickups, and Curt offers a wide array of options. Rothstein Guitars is proud to be the only AUTHORIZED DEALER for Curtis Novak pickups. You are welcome to mix and match any neck pickups with the JM180 Bridge pickup, however we recommend only Curt's single coil options so those are the only one's you see in the list.


    Jazzmaster® Replacement Pickup
    Wound to vintage specs


    Jazzmaster® / P-90 Replacement Pickup
    A P-90 style pickup made to fit in a Jazzmaster


    Telecaster® Bridge pickup made for the Jazzmaster form factor.


    Jazzmaster® / with Strat magnets and fatter wire.

    JM-CC Rod

    Jazzmaster® / Charlie Christian-style P-90
    A Charlie Christian-style P-90 made to fit in a Jazzmaster

Volume Kits (for both lower and upper circuits)

Copper Shield


We offer pickguards in white, mint, tortoise (** see note below) and genuine gold anodized which look killer. Here are a couple of pictures of our gold anodized pickguards photographed with different lighting.

    Gold Anodized Pickguards
    Click Thumbnail to See Larger Image

A Note About Fit

The pickguards we carry are manufactured by Fender and will drop right into any USA Fender Jazzmaster, however we now carry both the import and USA versions of the tortoise pickguard since it by far the most popular color choice. Upon special request, we can special order an import pickguard in another color such as white pearl. Please note the difference between between the pattern of the import and USA pickguards is relatively minor, however there are some differences with regards to color.

The image below will show the color variations between the USA vs the import tortoise pickguard. You can click on the image to see a larger version.

* IMPORTANT NOTE ABOUT CELLULOID PICKUARDS (this applies to Tortoise Pickguards)

** Tortoise pickguards are made of Celluloid like you will see on vintage Fender guitars. This is the GENUINE stuff.  Please be aware that celluloid is very flammable, so please keep it away from flames. Celluloid is a solvent based plastic and it tends to shrink over the years. Many vintage Fender guitars are plagued with this phenomenon. Very often the material cups slightly, so that when placed on a flat surface its edges may be raised 1/4" to 1/2" above the surface. Even if they're cupped when they come out of the package, they can easily be screwed flat onto the guitar.

Knobs and Pickup Covers

  • Available in white, black and cream.

How Long Will It Take? - please read before ordering

All pickups will be special ordered from Curtis Novak and each assembly is wired and tested one at a time to your specs by hand. Our lead time on Jazzmaster assemblies is approximately 4-6 weeks.

FENDER®, TELE®, TELECASTER®, STRAT®, STRATOCASTER®, JAZZ BASS®, J-BASS®, PRECISION BASS®, P-BASS® AND JAZZMASTER® are all registered trademarks of FMIC. All rights reserved. The author has no affiliation with FMIC.