Not much to be said here as I only slightly modified the factory body wiring. I made some wiring changes and tapped into factory wiring for gauges and remote starter. I removed a few wires that were not needed for under the hood in my conversion.
A very important resource for factory A and G body wiring is at Maliburacing.com
Note:
In GMs, all Pink wires are ignition hot. Orange wires are battery-fused. Red wires are battery-no fuse (or maybe a fusible link, depends upon location and service).
Instrument panel connection C183 is the connector that attaches to the printed circuit on the back of gauge panel.

The connection at firewall is the C100 connector.

Electrical wiring photos include standalone harness and body electrical – Reference photos with descriptions
…arranged newest to oldest…
Please note that you can click on the pics for a larger view, but you must eXit (top right corner) to return to the page to continue.
Gbody Electrical
