Attach the thermostat wires to the new terminal block, following the wiring diagram and your photo. Match the colors precisely.

These two wires are easily seen in a wiring diagram of the vehicle. Mike, your wire color should be dark blue and the purple.

Mitchell 1, a Snap-on company, has added color air brake diagrams to its June update of Tractor-Trailer.net, its comprehensive web-based truck repair manual system.

But all of the wires look the same, so you don't know where they go without a schematic (or diagram). Wiring diagrams take away the majority of the unknowns when it comes to automotive wiring.

Only two of these wires are needed. It's a 12 volt DC fan, so one has to be GND and one +12v. <P>I'll probly need to buy a new fan anyway, but I'd like to know just the same.

Do you have any information, including a wiring diagram, that can help me wire my Lionel No. 450 Operating Signal Bridge using AC relays? Thanks! — Fred Richmond As Lionel operators certainly ...