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Get organised!
Going to the online catalogue of one manufacturer is probably easier, there is only one brand to choose from, Summit may be overwhelming because they show all brands together;
Find what the hoses are for, and find the right hoses (brake hoses need to take massive pressure, for instance);
Check if hoses are available ready made (such as brake hoses)
Find the diameter you need, usually in AN numbers;
Make a simple drawing of the routing of the wire, or a list, including each location you need a fitting and what for: male thread to hose, compression (to connect to a pipe) to female thread, through firewall, attaching to fuel pump or brake proprtioning valve, and so on...
Look at the fittings available:
different colours, may or may not make a difference; for instance I know one company makes black fittings that are heavier duty than the usual red and blue. Fittings are most often red, blue or metal finish (with a coating), you pick
some fittings have one end or both that swivel, some do not: a swivel end is easier to assemble, you do not need to turn the hose to tighten! Also, when it is a fitting with an angle, the swivelling allows you to lign it up.
sort the various angles you need
Probably easier to stick with one manufacturer, but sometimes one company does not have afitting you need, then get it from another company
Each time you find one fitting, write the reference on your little drawing, where it goes, it will help when you get your 50 fittings in the mail!
Maybe Summit has good prices, but I have used a local shop, where I could go quickly when I had missed one (or when I had rounded one head!), I was also able to return the extra ones no cost.
Do all this one hose at a time, one system at a time, remembering that the front right wheel will probably not take the same as the front left wheel!
Once you are done, compile all the fittings into one list and get your credit card.
 

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I used to sell the hose and fittings for a while at a speed shop , what we recommended is stay with one company as a system ( hoses and hose ends ) this way you know its parts are compatable and will seal properly , but never interchange ends from different manufactuers than the hose manufacturer as they have may different retaining designs , material thickneses and diameters and may come apart , now AN is all interchangable fitting to fitting ( 37* ) so going from a hose end to a fitting of a different manufactuer is ok and that was the whole purpose to A-N design during WWII to have a standardized MIL spec fitting from many different suppliers and be interchangeable between the armed forces . you can call summit and ask for catalogs from the hose manufactuers to see whats available and help your choices ,My prefferences are Earls and Aeroquip ,I have used summits no named in a pinch and they are pretty good .
 
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