Realistic plumbing and wiring.

[ONEBADMK8]

To simulate engine components, wiring and plumbing use Fine Guage Solder available at
hardware and Electronics Supply Stores. Its available in several diameters and is easily
shaped and takes most paints well. A single roll will detail several 1/25 scale Auto's.
[This Tip Is From : Scott L. Ambert of Sarasota Florida & Fine Scale Modeler Magazine.]

[JTRACING]

i also use silver elastic cord. it comes in differant sizes. and it simulates braided hose perfectly. you can also use it with DM fittings. and its cheap, 50 cents buys enough to do 3 or 4 cars.
i get mine in the craft section of my hobby store.

[ONEBADMK8]

I use that chord to, for years now. Love it! I get it in 4 ft packs for $1.00. Heres a few shots of it in action.