Gary Lewis Posted August 22, 2019 Share Posted August 22, 2019 Installed my switch and now my headlights-on buzzer and dome light works although my map lights continue to not function. However on the electrical schematic I’m a little stumped as everything else in the circuit is getting power. Suggestions? Also very little Of anything seems to be working on the other circuit related to the seatbelt buzzer. My emergency brake light doesn’t come on either. However my fasten seatbelt light does work I will also add that I received and installed my hood to Cowl seal from bronco graveyard and it looked to be very high-quality although one of the screw holes wasn’t in the right position but otherwise I was very pleased thankfully considering that it was not the cheapest one available on the market. Ok, probably best to work this one thing at a time. So lets do map lights. I've included the wiring diagram, and it looks like the dome light and map lights are on two different fuses. Have you checked Fuse 8? As for the emergency brake light, in '81 there was no switch on the e-brake pedal. I've included both the wiring diagram for that as well as the following page in the EVTM that tells when the light should come on for the emergency brake. Does your light come on when you turn the key to On? Link to comment Share on other sites More sharing options...
delco1946 Posted August 22, 2019 Author Share Posted August 22, 2019 Ok, probably best to work this one thing at a time. So lets do map lights. I've included the wiring diagram, and it looks like the dome light and map lights are on two different fuses. Have you checked Fuse 8? As for the emergency brake light, in '81 there was no switch on the e-brake pedal. I've included both the wiring diagram for that as well as the following page in the EVTM that tells when the light should come on for the emergency brake. Does your light come on when you turn the key to On? I checked all the fuses when I first bought the truck and none appear damaged but I can take another look when I get home from work. And as my emergency brake light has never worked since I’ve had the truck, I don’t even know where it would be at! I can’t tell you how many times I forgot to take the break off Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 22, 2019 Share Posted August 22, 2019 I checked all the fuses when I first bought the truck and none appear damaged but I can take another look when I get home from work. And as my emergency brake light has never worked since I’ve had the truck, I don’t even know where it would be at! I can’t tell you how many times I forgot to take the break off I'm thinking it is the 2nd from the left, but am not sure 'bout that. I'm guessing the bulb may be burned out if it doesn't come on with the key. Link to comment Share on other sites More sharing options...
Steve83 Posted August 22, 2019 Share Posted August 22, 2019 ...it looks like the dome light and map lights are on two different fuses.They're all on Fuse 8. 4 only feeds the parking lights & dimmed dash circuit (pin I).And as my emergency brake light has never worked since I’ve had the truck, I don’t even know where it would be at!Probably one of the spots above the cluster that doesn't light up. Look on the frame below the master cylinder for the 2-wire connector on the proportioning valve. Both wires are Pu/Wh. https://supermotors.net/getfile/932180/thumbnail/propvlv83.jpg Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 22, 2019 Share Posted August 22, 2019 They're all on Fuse 8. 4 only feeds the parking lights & dimmed dash circuit (pin I). Right you are! Well spotted. Link to comment Share on other sites More sharing options...
delco1946 Posted August 27, 2019 Author Share Posted August 27, 2019 They're all on Fuse 8. 4 only feeds the parking lights & dimmed dash circuit (pin I). Right you are! Well spotted. I replaced all my fuses and still no map lights. The bulbs appeared to have their filaments still. I also called the emergency brake light bulb out and inspect it and it to had its filament intact, although it seemed a bit “stuck” so maybe the contact is corroded. Regarding the map lights any ideas? I guess I’ll take it back down and examine it again , see if I can find any voltage present. Link to comment Share on other sites More sharing options...
Gary Lewis Posted August 27, 2019 Share Posted August 27, 2019 I replaced all my fuses and still no map lights. The bulbs appeared to have their filaments still. I also called the emergency brake light bulb out and inspect it and it to had its filament intact, although it seemed a bit “stuck” so maybe the contact is corroded. Regarding the map lights any ideas? I guess I’ll take it back down and examine it again , see if I can find any voltage present. The diode allows the dome light to come on via the pin switches in the door w/o the cargo light coming on then. But both come on when the knob on the headlight switch is turned fully counterclockwise. You should check the map light bulbs to see if they work. I think, but don't know for sure, that they will fit in the dome light section with the cover off. But try them somehow - maybe just by holding the body of the bulb to the battery post and jumping from the other post to the base. If the bulbs are good then check with your volt meter to see if there's power at the unit. Link to comment Share on other sites More sharing options...
Steve83 Posted August 27, 2019 Share Posted August 27, 2019 I replaced all my fuses and still no map lights. The bulbs appeared to have their filaments still. I also called the emergency brake light bulb out and inspect it and it to had its filament intact, although it seemed a bit “stuck” so maybe the contact is corroded. Regarding the map lights any ideas? I guess I’ll take it back down and examine it again , see if I can find any voltage present. Check the wiring in the driver's threshold, and at the bottom of the B-pillar. Link to comment Share on other sites More sharing options...
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