It's crucial to consult your vehicle's repair manual or a reliable online resource like a parts diagram specific to your year and engine. Searching online with "Dodge Ram 1500 [Year] [Engine] ignition control module location" will yield the most accurate results.
Generally, it might be located near the distributor (on older models with distributors), on the firewall, or integrated into the engine control module (ECM). Without knowing your specific year and engine, any other location would be pure speculation and potentially misleading.