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#1 |
Registered User
![]() Join Date: Jan 2005
Location: Illinois
Posts: 1,006
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Help!! Transmission Wiring Harness!!
I have a 350 motor and 350 turbo tranny. I traced all the wires in the engine wiring harness and I have a wire that leads to a transmission wiring harness I think. It is wire 18DG on the wiring diagram. It has a wire connector and the has a bunch more connectors and wires. Is this needed for a 350 turbo tranny??
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#2 |
Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,450
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Re: Help!! Transmission Wiring Harness!!
Shouldn't have any wires going to the tranny, at least my 70 didn't have.
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. ![]() We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Help!! Transmission Wiring Harness!!
no those wires arent needed in fact they were normally disconnected at the dealer prior to delivery //its a half assed attempt at early emmissions theres 2relays on the firewall drivers side near steering column that were always disconnected then a sensor on the manifold and a wire going to tranny sort of in back of the shift linkage
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#4 |
Registered User
![]() Join Date: Jan 2005
Location: Illinois
Posts: 1,006
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Re: Help!! Transmission Wiring Harness!!
Here is a diagram of the wire I am asking about...I circled the wire..its 18DG on the engine wiring harness
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#5 |
huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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Re: Help!! Transmission Wiring Harness!!
They should plug into the rear light harness for the back up lights. The other end plugs into the Backup/Neutral Safety Switch at the bottom of the steering column...
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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#6 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: Help!! Transmission Wiring Harness!!
The two wires that you circled are for the backup lights on a floor shift four speed manual transmission, (light green and dark green wires).
If your TH 350 has a wire connected to it, (one wire) then it was part of an emissions system that was mentioned in a previous post. Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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