A forum for owners of Yamaha TTR250 trail and enduro bikes!

TTRfan · Super Guru

Headlight relay - anyone tried fitting one?

Dullthud · Veteran Member

RE: Headlight relay - anyone got one?

TTRfan · Super Guru

Thanks for the info Andy. I had started to think along your lines and had started looking at alternatives. The TTR one looks something like the relay below with four male car-size spade terminals. Before I do any more though I will just get a price for the genuine Yamaha part.

Brian

TTRfan · Super Guru

Bit of a delay getting through to Fowlers as their computer system had gone down.

The bad news is that the part is no longer available so, for the time being, I have Scotch clipped the incoming brown live wire to the outgoing brown/white wire which feeds the headlight switch. All appears to function properly so it might be a permanent fix!

I can't think why these two models had relays when all the other models did not so am hoping it is unnecessary confuse

Brian

TTRfan · Super Guru

Just taken the TTR for a run and when I parked it up, the engine carried on running when I switched off the ignition although the headlight went out confuse

The engine stopped when I hit the kill switch on the bars but obviously I have got something wrong. Thing is I haven't got a wiring diagram for the bike to check it out so I guess I had better source a relay asap to replace my bodge cry

Brian

TTRfan · Super Guru

HONDA CBR 600 HEADLIGHT RELAY

Dullthud · Veteran Member

Headlight relay - anyone got one?

Dullthud · Veteran Member

Ooh. And this.

http://www.vintagebus.com/wiring/defs.html

TTRfan · Super Guru

Thanks for the info Andy - looks useful.

I tried the CBR relay I got from eBay and it didn't fix the problem.

Whilst swapping tanks between my Raid and OE, I noticed that the Raid had a relay same as the OE so I fitted it and it didn't make any difference so my thoughts are that it isn't the relay that is the problem.

So there is a problem in the wiring somewhere. Very difficult to trace the wires from the relay without hacking into the loom though cry

Not sure quite what to do now.

Brian

Dullthud · Veteran Member

Oh dear. Good luck with that.

What does the relay do? Does it just turn on the headlight when you turn on the ignition? What about changing beam?

If the bike still runs with the ignition off when you join the relay wires then perhaps you could work back round from the battery positive with the negative lead on the earth and work out where it isn't doing what it should regarding the ignition switch. Could it be the ignition switch itself that's faulty and still supplying the low tension circuit even in the off position?

Andy

TTRfan · Super Guru

Some good suggestions there Andy.

This is the first time I have owned this particualr model. Apart from the 4WA1 (Raid) model, this is the only one with this relay. I can't think why it needs it.

I took the TTR for it's annual MOT test today (which it passed after I changed the "Not for Highway Use" rear tyre for a road legal one!) and there was an auto electrician at the bike shop and we had a chat about it.

He suggested that maybe the relay only came into operation when the engine started to save load on the battery i.e. engine starts, sends current to relay and headlight works. That would make sense so I will get the tank off and have another play.

Brian

TTRfan · Super Guru

TTRfan wrote:
...there was an auto electrician at the bike shop and we had a chat about it.
He suggested that maybe the relay only came into operation when the engine started to save load on the battery i.e. engine starts, sends current to relay and headlight works. That would make sense so I will get the tank off and have another play.
Brian

Bob the Spark was right!!!!! I took off my Scotch clip bodge and the headlight now comes on when the engine starts - which is as it should be on these models I guess wink

Cubber · Super Guru

There IS light at the end of the tunnel then.

Bob the Spark - 1
TTRfan - 0

Bob will be a likely attendee on your next run I presume?

Well done, perseverance will out.
Martyn

Dullthud · Veteran Member

That's quite clever really.

What will they think of next?

barra8 · Guru

Do you mean something like this??????

http://www.ebay.com.au/itm/VW-Beetle-Relay-headlight-dimmer-switch-5-prong-12V-98-9437-/321051752431?pt=AU_Car_Parts_Accessories&hash=item4ac02cf7ef

That may not be the right amperage but just for a visual.

You can use any headlight relay that lowers the voltage as specified.

Cancel that this thread is weird....It did'nt have any replies when i replied but now has a long thread of replies ????? Weird lol

..............................

Jarrah.

-- Edited by barra8 on Thursday 10th of January 2013 10:58:55 PM

TTRfan · Super Guru

TTRfan wrote:
TTRfan wrote:
...there was an auto electrician at the bike shop and we had a chat about it.
He suggested that maybe the relay only came into operation when the engine started to save load on the battery i.e. engine starts, sends current to relay and headlight works. That would make sense so I will get the tank off and have another play.
Brian
Bob the Spark was right!!!!! I took off my Scotch clip bodge and the headlight now comes on when the engine starts - which is as it should be on these models I guess

The WR250R headlight has the same type of relay.

Brian

domski1 · Senior Member

So, is anyone going to have a go at fitting the headlamp relay to a standard ttr then? It would be a great mod to just have the headlight coming on when started. I know fitting a switch would be easyer but you wouldn't have to think about having to switch it on or off.

TTRfan · Super Guru

domski1 wrote:
So, is anyone going to have a go at fitting the headlamp relay to a standard ttr then? It would be a great mod to just have the headlight coming on when started. I know fitting a switch would be easyer but you wouldn't have to think about having to switch it on or off.

It doesn't sound like anyone has tried Adam. Did you have a go?

I just found one of these 4WA headlight relays that I didn't know I had so am think about giving it a go if I can work out how to plumb it in wink

Not high up my priority list unless someone else has already done it and has all the answers!

Brian

domski1 · Senior Member

RE: Headlight relay - anyone tried fitting one?

TTRfan · Super Guru

The archives and search function on this forum are very useful! I was going through a box of indicator relays and came across two of these 4WA-00 Omron headlight relays:

Headlight relay 3.jpg

It brought back bad memories of trying to sort out what I thought was a fault disbelief

The relay is actually a very good idea which only switches the headlight on when the engine is running and saves accidentally flattening the battery when accidentally leaving the ignition switched on with the engine stopped. The WR250R has the same idea.

There is a special rubber holder that allows the relay to sit with the indicator relay and I have a couple of those as well.

Did anyone ever try fitting one of these to a "non-relay-as-standard" TTR?

Brian