My radio's been on for 2 years without any further rodent attacks. The gearbox has a thin metal plate that covers a worm gear on the motor coupled to a plastic gear that couples to the window movement linkage. If you choose to substitute, however, be sure to rearrange the terminals in the socket to the standard relay positions. Most of the available electrical connectors work well, but there are a couple specific types to avoid. In this particular application the 87 contact is 12V power and the 87a contact is connected directly to ground.
A massive power wire -- 12 gauge or so -- must be routed to the window control relays directly from some heavy-duty source any big, fat brown wire. For this new roller, however, the problem was different. However, there is always some residual magnetism floating around in a used alternator. It connects to the accessory line and measures line voltage. While slick, this connector makes weak and unreliable connections, especially on unusual wire sizes.
In the Jag, the pin is shaped like the head of a flush head bolt, so that no part of the pin extends beyond the roller and jams into the track. There are three wires on the negative inboard side. The Jaguar battery comes with an enclosed vent connected to a tube to route the vent out through the floor of the trunk. This part fits the existing hole perfectly and has a small, coloured illuminated strip across it, making it easy to find in the dark. These two are not that difficult to get to. And of course, an aftermarket electrical device is likely to be as good or better than a British original although not all -- this author found a particular type relay made in Italy and sold at AutoZone that wasn't worth a damn, three in a row failed quickly.
You may also want to buy some Molex connectors, such as Radio Shack catalog no. Thus the light goes out. I inserted a slightly larger bolt with a nut on the bottom. While I'm sure these repaired wires were beneficial in the overall scheme of things, it still did not solve my problem. This usually happens at 2500-3000 engine rpm. The current here is very low, a 3-amp rating will do.
The sending unit is a simple variable resistor. Go to an electronics supply store and buy four toggle switches. They found a way to adapt the older motor type. I went to a building supply store and looked through their collection of rollers intended for sliding closet doors, drawers, shower doors, etc. Don't mix up the two relays; the fuel pump relay is a standard relay, but the main relay, Bosch 0 332 014 112, looks like a standard relay, but it has a diode installed internally in series with the coil.
This relay is mounted under the black plastic cover at the right rear corner of the engine compartment, alongside the starter relay and the cold start relay. A more traditional design battery can be made to serve, but you must find a way to vent the fumes outside of the trunk. Then a simple repeat removal and insertion of the connector a number of times is often all that is needed. The window control relays should be wired to do the exact same thing. This makes the whole panel dark with a single bulb failure, but it's a cinch to replace the bulb; just remove the top cover of the console 3 screws and replace the bulb inside the housing. I also have a fairly new distributor cap and points, which we also double-checked in our laborious process. If you are connecting separate ends of wire or can slip something over the wire from an end elsewhere, the best insulation method to use is heat-shrink tubing.
The schematic embossed in the side shows the component clearly, and there is a diagonal paint stripe across the top to indicate it is unusual. A trunk is not ventilated at all, so the battery vapors will corrode the whole trunk. And, before doing any soldering, always dip the tip of the gun in the flux and apply a little solder to the tip as it heats up. In these cases, you might try a different idea: drill a hole through the housing itself, aiming for the same area adjacent to a bearing, and apply oil without disassembly. The glue locks the channel in position and the stop prevents the window from dropping too far and allowing the motor to pull the channel away from the glass. Many of the Boating catalogs should carry this and you may find a better price.
Jag makes a very expensive lube called Glietmo, but I prefer silicone. Underhood usage of them seems to be the worst problem. Round wood toothpicks can be used to clean the female part of sockets. The shop will also want you to mock up your harness with a few pieces of electrical tape to hold it in the proper shape. Select a size of heat-shrink tubing slightly larger than the insulated wire, and cut a piece a little longer than your splice will be.