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Old 04-06-2011, 11:32 PM   #1
Btc10
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Reverse lights not working.

My 1970 c10 reverse lights do not work. How can I get them to work?
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Old 04-07-2011, 12:36 AM   #2
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Re: Reverse lights not working.

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Originally Posted by Btc10 View Post
My 1970 c10 reverse lights do not work. How can I get them to work?
#1) I'd check the Fuse Box. I believe they take a 10 amp fuse.
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Old 04-07-2011, 07:59 AM   #3
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Re: Reverse lights not working.

Couple other things to check is the brake light switch on the brake pedal, also verify that you have good ground s
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Old 04-07-2011, 08:39 AM   #4
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Re: Reverse lights not working.

Hey there-- I feel your pain-- I went through this with all of my rear lighting (bad cut up at bumper by PO) -- BUT-- As above, after the fuse check the grounds- I think these ground-out in the case-- so you need to make sure the back-up light case is properly tightened. (clean metal bolt and case).

my 2 cents
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Old 04-07-2011, 08:46 AM   #5
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Re: Reverse lights not working.

http://67-72chevytrucks.com/vboard/s...d.php?t=431263
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Old 04-07-2011, 09:02 AM   #6
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Re: Reverse lights not working.

i'd first check that there is voltage boming in to the backup switch,if yes then i'd see if there is voltage coming out of the switch when in reverse, if not try adjusting switch

if you get voltage out of the reverse switch then you need to follow that wire to the rear and find out where you stop having voltage , if voltage at the socket for the backup lamp then bad grounds
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Old 04-08-2011, 12:43 AM   #7
Btc10
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Re: Reverse lights not working.

Can anybody post any pictures of the grounds and how the back up switch is suppose to be mounted?
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Old 04-08-2011, 06:47 AM   #8
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Re: Reverse lights not working.

Auto or manual transmission? If manual, which one?
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Old 04-08-2011, 09:47 AM   #9
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Re: Reverse lights not working.

Forgive my hijack here. Where is the backup switch on a 4 spd manual truck? My truck is converted from a 292 cylinder 4 spd to the a 350 th350 disc brakes out of a 71 and I need to find the backup switch plug in the wiring harness. When I find the plug then I can run it to the bottom of the column, making the reverse lamps work.....I hope.
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Old 04-08-2011, 10:22 AM   #10
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Re: Reverse lights not working.

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Forgive my hijack here. Where is the backup switch on a 4 spd manual truck? My truck is converted from a 292 cylinder 4 spd to the a 350 th350 disc brakes out of a 71 and I need to find the backup switch plug in the wiring harness. When I find the plug then I can run it to the bottom of the column, making the reverse lamps work.....I hope.
Backup switch on a 4 speed was on the tranny. Is your steering column original. If so might not have spot on bottom of column for a switch.
Automatic trucks where different than 3 on the tree columns.
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Old 04-08-2011, 01:45 PM   #11
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Re: Reverse lights not working.

Mine is a TH350 Automatic.
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Old 04-08-2011, 03:29 PM   #12
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Re: Reverse lights not working.

bottom of steering column near the floor the neutral safty switch and reverse are ont switch with 4terminals on it// to heavy 12 gauge purple wires are for the neutral safty part the backup light wires are thinner gauge16 if i remember right green
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Old 04-08-2011, 03:38 PM   #13
406 Q-ship
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Re: Reverse lights not working.

Quote:
Originally Posted by geezer#99 View Post
Backup switch on a 4 speed was on the tranny. Is your steering column original. If so might not have spot on bottom of column for a switch.
Automatic trucks where different than 3 on the tree columns.
The column from the 71 was installed in my truck, so yes I have the neutral saftey/reverse lamp switch on the bottom of the column. Besides it needed a column for the shifter. Which side of the truck would the switch in the 4 spd have been? Thanks and I return you to your pervious thread.
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