Bad Headlight--'78 Tomos

Kyle Witten /

I am the proud owner of my first ped, a 1978 Tomos; however, it has one problem... There is an intermentant failure in the headlight--i.e., I will be driving down the road after sunset and the light will go out... I've already had it into the shop trying to get it fixed, but it is a bit of a hastle trying to get it loaded in the car, transported 80 miles round-trip...

Any suggestions on how to fix this.... How difficult is it to replace the wiring from the generator to the light and/or switch...

Any help would be greatly appreciated...



Re: Bad Headlight--'78 Tomos

Hi There, the wiring is easy to replace, but make sure you mark your wires, so you dont mix them up. You would have to get a used one. doug d

Re: Bad Headlight--'78 Tomos

Chris Robertson /

The worst problems are the ones that are intermittent!

Typically, a problem like you describe is caused by a bad ground. Look for wire that are bolted to the frame around the ped. Unbolt them, clean the contacts, and rebolt.

If this doesn't work, get back to us.


Re: Bad Headlight--'78 Tomos

Reeperette /

I think, although I am not completely sure - that the ground wire of a 1978 Tomos or Tomos-Koper is actually connected to one of the two bolts that keep the headlight itself on and in place.

This sounds like the wire would be loose, or so oxidized that it's not getting connection, and there is also the possibility of the lead wire being loose.

Only two wires go to the older Tomos headlights, and it's usually ground wire to one of the mounting bolts, and lead wire directly to the back of the headlight rear cover itself, usually just a bit lower than dead center.

Check that connection first, just pull it, and if it comes off to easy, you know it was that one - sand the connector or wire brush it a little, and crimp it just a hair more with a set of pliers, then reconnect it - it should be stiff and not easy to remove.

To check the ground wire, the simplest way is to remove the two bolts holding the headlight on from the sides, under one of them will be the ground wire with a connector that the mounting bolt goes's possible, but difficult, to get it all lined up again removing only one bolt, so best remove both.

That connector can be gently sanded or wirebrushed with a little coca cola to remove oxidation (that iccky green stuff) and just bolt it all back together firmly.

Usually it's not a wiring problem as much as it is a connector problem, but if you try alla that and still have a problem, or a DVM read tells you that there is a break in the wiring, let us know, cause there is a simple way to do the re-wiring, but I'll save that fer when it's needed.


FYI - Tomos uses standard 12V Auto Bulbs, for the most part, available at any gas station or even 7-11.

Re: Bad Headlight--'78 Tomos

I have two ' 78 Tomos and yes the ground is at the tail light. But mine are 6 volt systems, I dont think I can use 12 volt bulbs. If you would like a copy of an owners manual let me know.


Re: Bad Headlight--'78 Tomos

Kasidy Manhart /

I have a tomos-Koper outboard motor and have lost the prop I was wondering if anyone would know where I could find and new or used one to replace it. The motor is a sportsman 4.0 Any help or suggestion would be appreciated.

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