DragCat Posted April 1, 2020 Share Posted April 1, 2020 Just wondering if this is the correct description for the fuse box. I couldnt find it in my service manual and some of the letters are worn off on mine . Quote Link to comment Share on other sites More sharing options...
71MonteCarloMD Posted April 2, 2020 Share Posted April 2, 2020 Looks correct to me as I couldn’t find my picture before I worked on electronic distributor replacement. 1 Quote Link to comment Share on other sites More sharing options...
jft69z Posted April 2, 2020 Share Posted April 2, 2020 Hey Mark, This came out of my '72. Quote Link to comment Share on other sites More sharing options...
DragCat Posted April 2, 2020 Author Share Posted April 2, 2020 9 hours ago, jft69z said: Hey Mark, This came out of my '72. Thanks Joe, I'll assume the 72 and 70 are the same lol. Weird its not in the service manuals I have Quote Link to comment Share on other sites More sharing options...
Andy's Auto Posted April 2, 2020 Share Posted April 2, 2020 70 and 71 do not have the accessory fuse in the top left corner. That started in 72. 1 Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted April 2, 2020 Share Posted April 2, 2020 21 minutes ago, Andy's Auto said: 70 and 71 do not have the accessory fuse in the top left corner. That started in 72. This is interesting. As it's 30 amp, is the red main fuse box feed from the horn relay 10 gauge? For 70 & 71, it's marked as 12 gauge. Would this replace the separate 10 gauge wire and circuit breaker on the firewall that was installed for power windows and seats (and convertible tops on Chevells)? Quote Link to comment Share on other sites More sharing options...
Andy's Auto Posted April 2, 2020 Share Posted April 2, 2020 1 hour ago, Paul Bell said: This is interesting. As it's 30 amp, is the red main fuse box feed from the horn relay 10 gauge? For 70 & 71, it's marked as 12 gauge. Would this replace the separate 10 gauge wire and circuit breaker on the firewall that was installed for power windows and seats (and convertible tops on Chevells)? Not sure, but my 72 Stage 1 convertible not only has the 10 gauge wire from horn relay, it also has two pigtails running from behind the fuse box to power the top and the power seat. Power windows are the same old relay on the firewall powered by horn relay connection. Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted April 2, 2020 Share Posted April 2, 2020 When a Chevy A-body was factory built with high power drawing accessories such as power seats, windows or convertible top, it received this additional 30 amp power feed with a circuit breaker and 10 gauge wire from the horn relay. If the 1972 fuse box was updated to include a accessory 30 amp fuse it it, the separate wire and breaker under the hood wouldn't be needed-and this makes sense. But the main fuse box feed wire would need to be 10 gauge with a different fuseable link, not the 12 gauge the 1970 & 71 cars had. Quote Link to comment Share on other sites More sharing options...
70mohtecarloowner1 Posted April 20, 2021 Share Posted April 20, 2021 Wat size fuses does the fuse box for the 70 monte carlo take? Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted April 20, 2021 Share Posted April 20, 2021 Hey Darren, welcome! The fuse amperages is marked on the fuse box. 1 Quote Link to comment Share on other sites More sharing options...
Pat Tellez Posted January 24, 2022 Share Posted January 24, 2022 Have a question what is the fuse voltz/amperage for the instmnt,LPS fuse ? Quote Link to comment Share on other sites More sharing options...
Hnymoonswt Posted March 21, 2022 Share Posted March 21, 2022 Hello! Does anyone know where i can find the fuse for the headlights in my 72 monte carlo? They dont work and i cant for the life of me find a fuse. There isnt one that i can see in the fusebox. Thanks! Jeff Quote Link to comment Share on other sites More sharing options...
DragCat Posted March 21, 2022 Author Share Posted March 21, 2022 2 hours ago, Hnymoonswt said: Hello! Does anyone know where i can find the fuse for the headlights in my 72 monte carlo? They dont work and i cant for the life of me find a fuse. There isnt one that i can see in the fusebox. Thanks! Jeff Jeff, if you look at Joe's post #3 it shows a 72 fuse box. The amp rating in listed for each position. You should be able to find replacement fuses at most auto parts stores, even possibly harbor freight has a kit of glass fuses. While your crouched under the dash test all and replace the ones that are bad Quote Link to comment Share on other sites More sharing options...
Scott S. Posted March 21, 2022 Share Posted March 21, 2022 I believe the headlights are on a relay mounted right behind the driver's side headlight..... Next to the horn relay. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted March 21, 2022 Share Posted March 21, 2022 While we're on the topic, does the twin orange wire that feeds the under dash courtesy lights plug into the battery connection in the fuse box ? Quote Link to comment Share on other sites More sharing options...
Rob Peters Posted March 21, 2022 Share Posted March 21, 2022 Jeff, First and foremost, I noticed this is your first post here on the boards. We hope you like what you see here and decide to become a full fledged dues paying member of the club. I could be wrong but it may be the 30 Amp fuse marked "Power ACC" Please keep in mind it may not be the fuse. The light switches have been known to to go bad. Is it only the headlights that are not working or do none of the parking lights work either? rob Quote Link to comment Share on other sites More sharing options...
jft69z Posted March 22, 2022 Share Posted March 22, 2022 I'm pretty sure that the protection for the headlights is a thermal limiter (circuit breaker) in the headlight switch itself. No separate fuses or relays. Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted March 22, 2022 Share Posted March 22, 2022 The headlights are powered from a 12 gauge red wire in the dash that also feeds the ignition switch. This red wire is powered from a fuseable link fed from the horn relay. The headlight switch has a circuit breaker in it. The short instrument cluster lighting fuse is 4 amps. 4 Quote Link to comment Share on other sites More sharing options...
MC-71 Posted March 22, 2022 Share Posted March 22, 2022 What does LPS stand for? Could it be used for extra lighting? I’m looking at the male terminal on the left bottom of the fuse block. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted March 22, 2022 Share Posted March 22, 2022 According to "Nasty Z28", LPS is an outlet for added aftermarket lights, or other electric components that you need to add a switch to operate. Quote Link to comment Share on other sites More sharing options...
Dtret Posted March 22, 2022 Share Posted March 22, 2022 “ Limited Power Supply”. Quote Link to comment Share on other sites More sharing options...
jft69z Posted March 22, 2022 Share Posted March 22, 2022 Right next to it is a spot for 'Inst LPS'.......lamps. Quote Link to comment Share on other sites More sharing options...
MC-71 Posted March 22, 2022 Share Posted March 22, 2022 I have halo headlights that I made. That LPS with a switch would work great for me. Thanks Quote Link to comment Share on other sites More sharing options...
Searsman Posted March 23, 2022 Share Posted March 23, 2022 Jeff, I had no headlights one night they went out.. had parking lights.. was the dimmer switch.. no brights or dim.. just a thought... Quote Link to comment Share on other sites More sharing options...
sbarnette Posted March 23, 2022 Share Posted March 23, 2022 8 hours ago, Searsman said: Jeff, I had no headlights one night they went out.. had parking lights.. was the dimmer switch.. no brights or dim.. just a thought... Same here. Mine was a loose connection at the dimmer switch. Quote Link to comment Share on other sites More sharing options...
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