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Old 11-11-2014, 03:16 AM   #1
Dannyboy1966
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Location: KANSAS CITY
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Bypass neutral safety switch

I've recently bought a 1986 GMC Sierra 1500, and I'm having fun with it. It came out factory with a 6.2 diesel and a 700 auto transmission. The previous owner blew the diesel and converted it to a 350, at the same time he changed it to a 4 on the floor manual, an SM-465 to be exact, with the original 3.73 rearend. Needless to say I go nowhere fast, thats ok I don't need any tickets anyway.. LOL
My question right now is. How do I bypass the old neutral safety switch on the column and in turn activate some back-up lights when in reverse?
One other question. is it possible to move the steering wheel closer to the dash, this thing sticks out a mile? I use to have a 69 GMC 3/4 ton and the steering wheel didn't stick out this far.
Thanks for any help.
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Old 11-11-2014, 12:18 PM   #2
bdiamond
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Re: Bypass neutral safety switch

You need to cut/splice the existing wiring to the backup light switch on the transmission. There should also be a switch on the clutch pedal bracket that replaces the auto NSS. cut and splice those together. I've got a diagram I can email if you need it.
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Old 12-12-2014, 11:38 AM   #3
Dannyboy1966
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Re: Bypass neutral safety switch

bdiamond, I could use that wiring diagram you have. I'll send you a private message with my e-mail address.. thanks
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Old 12-12-2014, 12:19 PM   #4
hatzie
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Re: Bypass neutral safety switch

Move the Neutral Safety wires to the clutch switch or just bypass them with a double ended Male disconnect wire.

The backup lamps need to be extended to the tranny switch.

Wiring diagrams are in my signature...
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