Powerman5K Posted September 26, 2023 Share Posted September 26, 2023 Question for the smart people: I currently have the basic dome light in my truck: I recently was gifted the updated version with the extra map lights: Will this new one work? Is it as simple as plug and play or will it require some extra wiring work? Link to comment Share on other sites More sharing options...
Powerman5K Posted September 26, 2023 Author Share Posted September 26, 2023 Sorry, I have the Map light on the bottom left that I'd like to install. Link to comment Share on other sites More sharing options...
ArdWrknTrk Posted September 26, 2023 Share Posted September 26, 2023 Sorry, I have the Map light on the bottom left that I'd like to install. The Lg/Y constant power wire should already be up there but not attached. Door & panel switches power the dome light through the Bk/Lb wire. Ground is through the mounting screw. Here's the 1980 EVTM.... Edit: on second look I see both wires at C406 and C705 but I see the Lg/Y wire also has connection at C202 which would be at the bottom of the driver's B pillar. The 1980 harness is a little unique, and I can't say circuit 54 is continued up to the lamp if the map light wasn't optioned for your truck At worst you would have to push a wire from the lamp down to the cab corner. Sorry if I don't know these first year trucks as well as I do the later ones. Link to comment Share on other sites More sharing options...
ratdude747 Posted September 28, 2023 Share Posted September 28, 2023 The Lg/Y constant power wire should already be up there but not attached. Door & panel switches power the dome light through the Bk/Lb wire. Ground is through the mounting screw. Here's the 1980 EVTM.... Edit: on second look I see both wires at C406 and C705 but I see the Lg/Y wire also has connection at C202 which would be at the bottom of the driver's B pillar. The 1980 harness is a little unique, and I can't say circuit 54 is continued up to the lamp if the map light wasn't optioned for your truck At worst you would have to push a wire from the lamp down to the cab corner. Sorry if I don't know these first year trucks as well as I do the later ones. If memory serves my '84 doesn't have the second wire (had a stock headliner, but the non-map light). Link to comment Share on other sites More sharing options...
ckuske Posted September 28, 2023 Share Posted September 28, 2023 Sorry, I have the Map light on the bottom left that I'd like to install. My truck originally had a map light. When I bought it back, it the dome light. I've since bought a nice NOS dome light and installed it. (the dimmer light isn't great, but I like the nostalgia off the warm light though that opaque lens, and the map lights are cool in general) No wiring changes were needed, at least in my case. Link to comment Share on other sites More sharing options...
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