Sorry, I am not aware of any online guide for this. If you have a look at a few of the resto threads in the gallery section of this forum you will be able to see the relativly simple structure of the body and where you have to inject.
Personally I prefer to use Dinitrol because it creeps into the seams and IMO its a superior product.
If you must use waxoil then thin it down till it flows like oil. Straight out the can it tends to be thick like lumpy yoghurt and hence wont creep and flow.
Dont be tempted to just heat the tin up like some people advise. Although this will make it runny in the tin and the pump, once it hits the cold metal of the body cavities it will rapidly cool back to its lumpy yoghurt viscosity and will not flow and creep enough to penetrate the seams and narrow spaces.
