So there are a lot of very old posts on the forums about K-bike ignition cables, and how they are "special" (built in resistors, and gap resistance in the coil ends of K75 leads in particular? I think?)

I'm in the process of relocating the coils on my '93 K75, and need longer / custom leads. It sounds like I can't just pick up whatever random ignition cable kit off Amazon, but need something a bit more "specialized"?

Can anyone recommend a decent kit for build-your-own cables for the K75? All the old forum posts mention Realm, RAM, and a couple others, but a lot of them are dead links, discontinued, or no longer in business.

Thanks in advance for any help!

This place sells Brick customization trinkets.

Ebay has NGK 5 Ohm resistor spark plug caps.https://www.ebay.com/itm/NGK-90-NGK-SPARK-PLUG-5K-ohm-RESISTOR-CAPS-FOR-Motorcycle-ATVs/154335296179? 
Regards Martin.

Laitch wrote:This place sells Brick customization trinkets.

Not at that price, Laitch. Can get the same setup here (plug caps plus leads) for €35 or less. Complete ripoff for the gullible.

Dai wrote:

Laitch wrote:This place sells Brick customization trinkets.

Not at that price, Laitch. Can get the same setup here (plug caps plus leads) for €35 or less. Complete ripoff for the gullible.

Got a link or anything? cafe4racer is great for *some* things, but their ignition wires are pre-cut (not the right length for me), and they don't have the coil-side end caps (which I'm led to understand are special somehow?)

roach374 wrote:
Got a link or anything? cafe4racer is great for *some* things, but their ignition wires are pre-cut (not the right length for me)

What's the right length for you? Resistor caps are available from several sources. Please click on your Profile tab then click on the Signature tab within it and put your moto's year of manufacture, model and body style—RT, S, Standard—so they will show up in every post you make and respondents will know what you've got without needing to track down the details.

Laitch wrote:

roach374 wrote:
Got a link or anything? cafe4racer is great for *some* things, but their ignition wires are pre-cut (not the right length for me)

What's the right length for you? Resistor caps are available from several sources. Please click on your Profile tab then click on the Signature tab within it and put your moto's year of manufacture, model and body style—RT, S, Standard—so they will show up in every post you make and respondents will know what you've got without needing to track down the details.

Done! But I'm not sure it matters. As I said in my original post, I'm relocating the coils elsewhere on the bike. What I'd like to do is just buy a couple of meters of ignition cable and cut them to length myself (I've done this before). Only problem is that the end caps / plugs are supposedly "special" for K bikes, and I'm not sure where to get them (MartinW posted a helpful link to some NGK 5KOhm plug-end connectors, but not the coil-end connectors).

Try the Yellow Pages for custom ignition lead manufacturers or a good auto electrical supplier. We used to have a local manufacturer of leads but now long gone.
Regards Martin.

Spark plug caps are spark plug caps. There are two different types, resistor and non-resistor. The caps on our bikes have metal shells for some unknown reason(EMI shielding?) and a tab that you can grab with pliers to pull them off the plug. IMO, they are typical BMW gross overkill. A lot of people use the NGK caps as well as wires from other sources. As long as the resistance is close, there isn't much difference between plugs/wires to be concerned about.

One nice thing about the NGK caps is that they are made to work with the threaded terminal on the D7EA plugs they spec for the K75 and don't require terminal nuts like the BMW caps do.

Point-Seven-five wrote:Spark plug caps are spark plug caps.  There are two different types, resistor and non-resistor.  The caps on our bikes have metal shells for some unknown reason(EMI shielding?) and a tab that you can grab with pliers to pull them off the plug.  IMO, they are typical BMW gross overkill.  A lot of people use the NGK caps as well as wires from other sources.  As long as the resistance is close, there isn't much difference between plugs/wires to be concerned about.  

One nice thing about the NGK caps is that they are made to work with the threaded terminal on the D7EA plugs they spec for the K75 and don't require terminal nuts like the BMW caps do.

This is some great info, thank you! I think I've got the plugs, plug caps and wires sort of figured out. I'm still a bit in the dark about the coil caps though. Are they BMW "special sauce" as well?

I think the k75 leads are different for a reason, or why bother.

K75 leads have an air gap, so you should have no Ohms resistance, do you? And are your leads numbered 1,2 and 3?

K100 bikes have two sparks at the same time, one wasted. K75 has only one spark or one wasted spark at a time. I'll guess this is the reason for the air gap. Using different leads might cause excessive current (primary and secondary) which might cause damage.

Threads here show you might go years or decades without noticeable damage.

Your call.

Point-Seven-five wrote:Spark plug caps are spark plug caps.  There are two different types, resistor and non-resistor.  The caps on our bikes have metal shells for some unknown reason(EMI shielding?) and a tab that you can grab with pliers to pull them off the plug.  IMO, they are typical BMW gross overkill.  A lot of people use the NGK caps as well as wires from other sources.  As long as the resistance is close, there isn't much difference between plugs/wires to be concerned about.  

One nice thing about the NGK caps is that they are made to work with the threaded terminal on the D7EA plugs they spec for the K75 and don't require terminal nuts like the BMW caps do.

Reminds me of my CB500-4 in the 70s. They too had metal shrouds, in torrential rain cylinder 1 and 4 caps tended to short out from the shroud to the head. An annoying feature. 

But on the K its so you can have a metal tab so you can grip it to pull it off the plug. As said, its just a regular plug cap, resistor on 2V Ks and non resistor on 4v Ks. I have replacement leads on some Ks and no tabs on them!