Welding and electronics

[fishandchips]

I have some welding to do on my XS650SG and saw somewhere on this forum about removing the tci?

I have no battery attached and no wires are grounded at the moment.

Is it necessary to remove the tci? Anything else need removing?

Cheers my learned fiends.

Garry

 

[Rasputin]

I have used an electric welder on various vehicles. On a bike I would unplug any electronic modules and of course the battery. The most important thing I think is to ensure the ground lead on the welder is clean and tight to the frame.

 

[fishandchips]

Will it not be safe to leave the tci on the bike but not earthed? Reason is I have soldered the connections because I didn’t have any connectors. When I eventually decide what’s going where, I will come up with a better solution for the wiring.

 

[Rasputin]

Now would be a good time to cut it loose, there is no risk to it and you can order some connectors.

 

[5twins]

Unfortunately, one of those wires to the TCI that you soldered is the ground for it. It can't ground through it's mounting since it's in a plastic case, so it has a ground wire running into it.

 

[xjwmx]

If you're solder this kind of thing, strip the wires about 1//4", tin them both very generously, ready to drip a blob. Hold them side to side, overlapping with the iron on them and you'll get a nice smooth strong joint that runs out over both wires. No need to twist them together. To unsolder, just touch it with the iron.

 

[gggGary]

It's your bike but I'm the one that harps on removing the TCI before welding. I've sold too many TCI's to guys who didn't.
(I'm out of TCI's)

 

[xjwmx]

IC chips like in the TCI can be killed by even shocks from static electricity. Early ones like that one, are more susceptible.

 

[fishandchips]

Thanks guys, I had thought as much from what I had read but needed the push to remove the tci.

The 3 white wires from the generator to the tci, do they need to be in any particular order, shall I mark them in order?

I am going to stick with the solder joints and follow xjwmx’s advice and stop twisting the wires together. Probably get a neater joint anyway.

 

[gggGary]

The 3 white wires from the generator to the tci

that's not the TCI. Voltage rectifier (combined with regulator after 1979) gets three whites.
TCI is what pic calls igniter unit.

 

[fishandchips]

3 days ago since I hooked up the wiring and I forgot it already , my diagram matches yours.

So, Do the 3 wires need to be in any particular order? Just cos I was curious.

 

[Jim]

So, Do the 3 wires need to be in any particular order? Just cos I was curious.

Nope. Any order will do.

 

[fishandchips]

Great thanks Jim.

Also anyone know what this power outlet is please?

Great thanks.

Also anyone know what this power outlet is please

 

[peanut]

its just a suggested optional unfused power take of point ....you don't need to include it if you have no need of it. I would have though it a lot safer to have a switched and fused power take off point myself.
Stock bikes have a power supply for a rear parking light for instance which is taken off the red wire feed from the battery to ignition switch .As far as I can make out it is unfused ? but it is switched via your ignition switch so there is some isolation.

 

[fishandchips]

Aggghhhhh yes I see peanut. The parking light is available even when ignition is off.

Cheers my dears

Garry