1990 Dodge Ramcharger T-One Vehicle Wiring Harness with 4 1990 Dodge Ramcharger - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Quickly and easily install a 4-way trailer connector on your Dodge Ramcharger with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.4.8/5(40)Category: Custom Fit Vehicle Wiring ramcharger wiring harness | eBay Find great deals on eBay for ramcharger wiring harness. Shop with confidence. Skip to main content. eBay Logo: Dash Kit for Dodge Ram Single Din Radio Stereo Install w Wire Harness (Fits: Ramcharger) Brand New. 4.5 out of 5 stars. 12 product ratings - Dash Kit for Dodge Ram Single Din Radio Stereo Install w Wire Harness.