Topic: Map Light Plug/Wiring

[rickmustang]

Would the plug exist on a 1971 wiring harness for the over the gauges map light if it did not originally come with a map light?

[midlife]

No.  You need the optional convenience harness for any of the 71-73 years for the map light to work.

[rickmustang]

Is that a harness that plugs in somewhere?can I purchase the harness and run the connection to the map light? Or is that harness ?built-in??

[midlife]

It is a separate harness that plugs into: passenger door jamb switch, the plug that contains the parking brake sensor line, the ACC fuse buss extender, and into a circuit breaker thick line that runs from the starter solenoid through the firewall and ends in a 3 prong plug for seat back release, power windows, and rear defogger.  That harness is fairly rare, and differs for each of the 3 years. 

Since most of the wiring is hidden, you'll need the fused green/yellow #53 lead, the black/blue #54 lead, and a ground to power the map light.  I've made up one harness for a customer, and vowed not to do it again: too difficult to mimic the factory pick-up leads.