Help - yellow liquid from middle bracket of exhaust?

Hi thanks. The screen wash is blue. The overflow tank is yellowish but very dull. I have checked all around and above the bracket and it is completely dry. It is just a slow drip from the bottom of one of the brackets. I’m absolutely flummoxed to be honest!!

Ok so going back through the pictures it's the joint nearest the rear of the transfer box, the liquid absorbes into a paper towel, the liquid doesn't wet plastic however it will creep on the rough surface of the exhaust yet is able to withstand the heat and or is in sufficient quantities to cool the exhaust to a temperature it can withstand, and it isn't florescent in uv light, is that about it? So the first liquid that is going to be able to meet all those is coolant but I'm not convinced that it's necessarily going to be able to condense back into a liquid having passed through the exhaust. It appears to absorb too easily to be an oil but the colour would match with air conditioning lubricant. When you took it to the ac place did they add dye to the system or just wave a uv light at it as I'm not sure if suzuki add dye at source or just lubricant and evaporant/refrigerant. But even if it were ac juice it's not just materialising at only that joint so far from an obvious source. It could potentially be washer fluid but I've never heated any to see if it will change from blue to yellow but again there would have to be a fairly obvious source. I think it's time to start taking it in bits and looking inside and around and above with an unobstructed view.

Oh and one other thing does that joint leak exhaust gasses if you put your hand over the tail pipe to over pressure the system, because it's unlikely that a liquid will escape where a gas can't, which puts it back to something external to the exhaust.

Get some on your finger and see if it feels oily.

Coolant. It is dripping from the heater connection.

Hoses may be perished due to age, or could have been damaged, or could have been removed and then refitted (when old, they often don't reseal well). Check those first and go from there.

Hi again. Thanks so much for the support. I went back to car this morning and had another look. There is a drip when the car / exhaust is cold. The liquid is bright green / yellow and watery. When I started the car and put my hand over the exhaust the drips were more pronounced and I think there may be a very small crack on the front and rear bracket. When the car warms up the drips disappear. Then when it cools the slow drip comes back.