I built a set of 8mm MSD plug wires, and it only cost me $65. Here's the write-up:
MSD IMO, make the best spark plug wires, and I've made sets out of DIY kits before, as well as changed applications, and shortened my OEM set. It bothered me that OEM cost around $120 for 7mm wires. So I decided to make my own. MSD DIY kits for V6s cost about $90, but V8s cost around $65, because they sell better. So I got the V8 kit. If you do this, send me your extra 2 wires
This is the kit I got:
Here they are side by side:
It comes with standard, and HEI terminals for the disty side. Be sure to get the ones with the straight end on the spark plug side.
First you have to take apart a wire. Normally (on a V8), you'd start with the shortest wire on both the car, and the kit, but even the shortest one in the kit is long enough for the longest on our car, so it doesn't matter.
Clean your old wires with rubbing alcohol!
This is important. I'll tell you why later. Pull off the boot on the disty side, and then pull off the part you grab that sticks up from the valve cover. Now pull off the plastic sleeve, by twisting the wire itself, until the pins on the side of the plug end terminal line up with grooves inside the plastic sleeve. This is trial and error, but easy, once you get it. Pull the sleeve right off the plug end. If you're going to throw away your old set, cut the wire in the middle, and it'll be easier to pull off the end
Here's the plastic sleeve next to the grabber part, still on the wire:
Now put the new wire next to the old one (plug ends) and cut off the OEM sleeve where it lines up with top of the MSD boot.
This is so the overall height is the same, and your plug holes are protected. Now clean out the inside of the sleeve, and slip it down the wire so the cut end butts up against the top of the boot like so:
Then clean out the the rubber grabber part thoroughly with rubbing alcohol, and while it's wet, slip it on down over the sleeve, being sure that the wire coming out of the groove lines up with the opening of the grabber part like this:
The reason for all the cleaning with alcohol is so that all the rubber/ silicone part stick together when dry. This way there's less force on the end of the wire when you pull it out.
Here they are done, front, and rear banks:
Here's the rear, new next to old. I put the rubber end piece on from the OEM sleeve onto the MSD boot, but found that it's unnecessary.
Now you're ready for the disty end!
I made mine a short as possible for less resistance. If you want to tuck them, or do something fancy, you will have plenty to work with. Plug the plug side in, and route it however you want, then hold the disty side so it just touches the disty where it's going to plug in, and mark it. ALSO, mark it on the spot that's touching the disty, so you know what direction to orient the bend in the boot, so you don't have to twist the wire to plug it in. This could help the longevity of your wires. Now cut the wire
about 5mm past your mark, and carefully cut the wire about 2mm deep where your mark is. The kit comes with a tool to do this, but I used scissors because I've done it this way for years, and it's easier for me. If you use scissors, just go around the wire lightly, like you would a metal pipe with a pipe cutter. You only need to go through the outer layer, and the inner layer will pull apart easily, and the core will not.
Now, spray the new boot with alcohol (to lube it), and slide in on a couple inches from the end.
Crimp on the 90 degree terminal per instructions, using the tool. I found it easier to crimp it a little with pliers, to hold it in place. Line up your mark with the open part of the terminal, so it bends the right way to go into the disty. Slide the boot into place, and you're done with one! Repeat as necessary. The plug ends are different on the F & R banks, but the procedure is the same.
My kit only came with 2 standard disty terminal ends (the ones we need), so I went back, and they gave me them from another kit. IDK if it's because I got a HEI specific kit, or they shorted me. You should see if they make a kit with straight plug ends, and standard disty ends.
Now, with my MSD Blaster SS coil, I'm sure that there are 15,000 more volts going to my plugs than with the stock coil.
'93 GS - P&P DE w/ ZE exh. cams/ pistns, KLG4 IM, 65mm TB, MSnS, Phenos, K&N RAI, UDP, Grnd wires, rear batt, filld MM, torq strt, TWM short shftr, Exedy, Lng tube hdrs 2.5" Side exhaust, H&R sprngs, Poly bushngs, strutbars, Alum. crss mmber&tiebar, 22mm swybar, solid links, Direzzas, leather int, Alpine 9805 stereo & alrm, keyless entry, 10 Boston Accoustics spkrs, Prjectrs, Blaster2, CF hood, FG hatch, Lexan