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03-28-2005, 12:21 PM
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#1 |
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II Timothy 4:2
Join Date: Mar 2005
Location: Fort Worth
Posts: 361
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Backup lights
My backup lights aren't working and have never worked (at least since I got the truck, and the PO said they didn't work). I have a 72 with a four speed. Did they have working backup lights originally? If so, where does the wire plug into the tranny? Are they on the same fuse as the tailights, etc.? I haven't really done a whole lot of research into the wiring for them, just looking for some info.
Thanks!
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72 C-20 2WD LWB Custom Camper Deluxe 350 4 Speed "Project Lazarus" MY TRUE PRIDE AND JOY "Dangit, Bobby, people will see that oil stain and think I'm a drunk." |
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03-28-2005, 12:30 PM
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#2 |
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Its a Truck Thing......
Join Date: Dec 2004
Location: Sierra Vista, Arizona
Posts: 3,159
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Back up lights are seperate fuse, check the trans on the reverse lever for the switch, if not hook up a toggle switch, I have them in all my 3 speeds, make sure to check the light housing grounds, you will need a light tester and check it, if it has power and the light doesnt come, its the ground, may have to make a housing ground.......
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71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time |
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03-28-2005, 01:50 PM
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#3 |
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More Cowbell....
Join Date: Mar 2004
Location: Puckett, MS
Posts: 3,569
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The reverse switch should plug in on the column close to the firewall (if it is an original automatic, there is also a neutral safety plug). I think that one wire is hot when the key is on. Then put it in reverse and the other will go "hot", thus sending voltage to towards the lights. If it is hot coming into the switch, then hot headed out of the switch, the issue is farther back. Check the bulb connector to see if the contact is hot. If so, then the housing is not grounded (as stated by 71MGC10).
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There once was a member from Puckett.....Who ( fill in the blank blank blank ) bucket |
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03-28-2005, 02:22 PM
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#4 |
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Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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It sounds like you have a manual tranny, the plug should be toward the front of the tranny near the top. IIRC I could get to mine from the drivers side of the tranny while laying underneath the truck. It was VERY hard to get enough room to get it plugged back in.
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Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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03-28-2005, 02:50 PM
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#5 |
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Registered User
 
Join Date: Aug 2001
Location: Rocky Mount, MO
Posts: 1,293
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If you have a high hump remove the hump. on the driverside is the switch with plug, remover the switch and replace it. I tried cleaning the old contacts and it worked for a couple of months and I had to go back in. If you try to get it from under the truck good luck "lots of cussing when I did it that way~!"
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03-28-2005, 03:32 PM
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#6 |
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II Timothy 4:2
Join Date: Mar 2005
Location: Fort Worth
Posts: 361
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Thanks all for the info. Yes, it's a high hump standard.
__________________
72 C-20 2WD LWB Custom Camper Deluxe 350 4 Speed "Project Lazarus" MY TRUE PRIDE AND JOY "Dangit, Bobby, people will see that oil stain and think I'm a drunk." |
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