voltage source

If the radio isn't working or hooked up, try using the radio wires... One will be red - use that for the + power and then use the orange one for the tach light and it will brighten and dim with the dash lights... The radio wires are on the two way connector with one red and one orange...
Hey! I never thunked of that! One car is radio delete and other does not have the antenna! BUT I havn't listed to music in a old mopar is 30 years!!! The engine, even if a slant is music ( OK so the slants have straight thru exhaust!). Thanks!