Re: Hydraulic stop light switch

Posted by HH56 On 2019/6/30 19:13:35

Wish I could be more help but think it is now time to follow the wiring with a test light or meter to find out where the voltage to the brake, instruments and now oil light is coming from and why it is apparently not present in more than one place. All those items if wiring was stock would not be powered from the same end source so there must be something changed or the failure is early in the distribution. The instruments get power from one circuit breaker fed from the ign switch and the brakes from a constant on breaker fed from the battery. The breaker and the ignition switch are powered direct from a wire coming from the battery terminal on the starter solenoid. If the failure is that wire and so early in the distribution you should be seeing more things without power.

If you have trouble reading the diagrams maybe a friend could help out. If stock, the oil light gets power direct from the ign switch and is grounded thru the sender. When the key is on and engine is not running or has low oil pressure the light should be on unless the wire is disconnected, bulb burned out, or sender went bad. There is a dark blue wire that connects the bulb socket to the sender. Maybe that wire or the socket in the cluster was pulled out or broken during the searching.

On the wire hanging out of the steering column that does look like the Ultra quadrant light. It is short so there should be a black wire coming from the ceramic portion of the headlight switch with a connector having a round hole that bullet on the steering wire would mate with.

I can't really see enough loom details to guess what wires might be in that section of loom along with the brake switch. The loom is low so the light dimmer is a possibility as are some of the components low on the block such as oil sender, horn wire, maybe even the generator.

Here is a direct link to the 54 factory diagram. It has wire colors as well as the sizes and also the notation where there was a factory error Packard caught and notified dealers about. A couple of other errors are still on the diagram and not noted.https://www.packardinfo.com/xoops/html/downloads/wirediagrams/1954%2054th%20Series%20.pdf