[Tigers] direction of oil flow through filter

[Owain Lloyd]

hello,

i have a remove filter in the wheel arch plumbed into a 4 port sandwich
plate.  i would like to install an oil cooler, thermostat and check valve
inline after the filter.

any clever ideas for the easiest and least messiest way to tell which hose
runs to the filter and which back to the block?

thanks,

- owain.