Repairing Blinkers: KLR250 Refresh, Reflash and Rehash Part 2

Blinkers on a dirt bike are kind of silly but lately I’ve been running The Widowmaker, my 2005 KLR 250, on the street more than is right or just. The KLR250 spends most of its time in Florida and the automobile drivers in that state are legendarily bad. With Nearly-Deads behind the wheel and blind rage as their co-pilot any blinking light that may draw attention is a good thing.

The Widowmaker’s blinkers have had a rough go of it. They worked fine when I bought the bike but several thousand miles of the Trans America Trail managed to put a pronounced sag in the rubber stalks holding the lamp fixtures. The rubber soon cracked and the blinkers hung down swinging on their electrical wires.

At first I managed to keep the original stalks in the game using the KLR rider’s best friend, duct tape. Soon the tape was not enough and I progressed to beer can wraps, bailing wire and spit. The rubber stalks crystallized and began to crumble into small, hard black cubes. It was a metamorphosis: soft, pliable rubber became fragile like chalk. The lamps, now free from their moorings swung in a crazy amber half circle pointing towards the ground. As they filled up with water the light fixtures quit blinking and they became memories of directional indicators slapping the side of the motorcycle.

I couldn’t find replacement stalks online. The complete blinker is sold as a unit and when your motorcycle needs as much attention as mine you can’t blow a bunch of money on parts that will break off soon anyway. I dismantled the old blinkers and decided to try to fix them for two reasons: Because I’m cheap like that and KLR riders will always take the hardest path.

Two of the direction lamps weren’t rusty and came apart fairly easy. The rusty ones were more of a challenge. I had to soak them in penetrating oil and break the glass bulbs in order to remove the bulb base from the socket using pliers. After getting them apart I soaked the rusty bits in Evaporust for a few days and then painted the reflector and socket a fetching metallic silver.

Making new stalks was a conundrum: I needed something stiff enough to hold the lamp in position but flexible enough to bend during a crash, preventing destruction of the blinker lens and housing. I toyed with the idea of two thin strips of sheet metal to provide a malleable stem that could be bent back into position. I debated welding a thin tube between the threaded ends but didn’t have any tubing that would serve the purpose.

I settled on ½” Pex plastic plumbing tubing mainly because it comes in a red color than neatly matches The Widowmaker’s faded bodywork. The Pex copper crimp rings would make for a neat finished end to the Frankenstalks. The only problem was the threaded ends salvaged from the old rubber parts were a little too big for the Pex pipe.

I really could have used the South Bend lathe to turn down the ends but that project is not completed yet so I had to chuck the parts into a hand drill and grind them to size. Even cut down they were still too large for the Pex but I didn’t want to grind any more and lose the knurling. It’s amazing how a new tool opens up avenues of creativity. It frees your mind, man. My new tubing expander (bought for an air conditioning job) made short work of the Pex inside diameter and the threaded inserts fit perfectly.

Next I used the tubing expander to resize the copper Pex crimp rings to fit the expanded pipe. Things were going well. After crimping the copper rings with a hydraulic cable crimper the stalks looked like 100 bucks.

The grinding process put a divot in the threaded end so I had to run a 10mm die over the things to straighten out the divots. With 4 new blinker stalks it was only a matter of time before everything was reassembled and back on the motorcycle. I’ll need to put a battery in to see if the blinkers actually work (I’m using the same battery in the Z1, the Husky, and the KLR) but I remain confident they will work at least as good as they used to. Which is not at all.

A few questions remain. Will the crimped ends stay put on a rough trail? I assume they will rip out during a crash and that’s good. My new stalks cost about 67 cents apiece so I can replace them as often as I like. Will the plastic tube droop leaving me with a sad-eyed KLR250? Will the bike require a plumbing inspection now? I don’t know the answers but I’ll report back if these Frankenstalks actually work.

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More “Bring ‘Em Back Alive” Gresh Resurrection stories are here!