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#1 |
Registered User
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Location: Mt. Vernon, WA..
Posts: 2,322
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wire id please
just got a 72 highlander and am going thru the engine bay. I know green wires are usually temp wires(the one on the left), any ideas what the other 2 wires are for? There's a temp sending unit on each side of the block. First pic of sending unit is on pass side other is on drivers side. I'm just trying to get engine to run or start, after a compression test,fresh oil, new gas, plugs ect... before I decide whether to keep the truck or part out. Thanks
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#2 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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Re: wire id please
Green is Temp, Greasy one is for oil idiot light, the other with the flat plug is ????? how many wires Two or Three?
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#3 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
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Re: wire id please
Did or does it have a/c?
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#4 |
Registered User
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Location: Mt. Vernon, WA..
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Re: wire id please
no a/c, didn't have it. 3 wires.
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#5 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
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Re: wire id please
Turbo 350 or 400?
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#6 |
Registered User
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Location: Mt. Vernon, WA..
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Re: wire id please
350 tranny- M49 on the spid sheet. 400 tranny has a square pan, right?
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#7 |
member #16
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Location: Yuba City Ca.
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Re: wire id please
The one on the pass side head is a switch for the TCS (transmission controlled spark) Only allows vacuum advance in high gear and when up to operating temp. It has usually been removed from most trucks that had it by now.
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#8 |
Msgt USAF Ret
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Location: Kalamazoo, Michigan
Posts: 8,714
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Re: wire id please
Probably one of the TSC relay connectors. TSC was a crude emissions device that retarded the ignition spark in relation to engine vacuum. It came out in 70 or 71 IIRC.
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#9 |
Registered User
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Location: Mt. Vernon, WA..
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Re: wire id please
VetteVet- This set of wires is in the original harness and is located in the rear of the dist. area, it won't pull over that far. Thanks tho!
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#10 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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Re: wire id please
TCS transmission controlled spark hook up, I'd say thats why there are 2 temp senders also.
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#11 |
Firefighter
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Re: wire id please
some had the relay up kind of behind and to the side of the dist. also.
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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#12 |
Registered User
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Location: Mt. Vernon, WA..
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Re: wire id please
ok. THANKS! now lets hope for a good compression test!
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#13 |
Senior Member
Join Date: Aug 2003
Location: Lubbock, Texas
Posts: 2,443
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Re: wire id please
I agree with the others above, it is for the TCS or TSC stuff. That is why there is two temp senders. One for the guage and the other is for the TSC. I found some paper work that explains what id does and how it hooks up but I can't find it.
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72 Cheyenne Super 80 Silverado Blazer 2wd |
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#14 |
Msgt USAF Ret
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Location: Kalamazoo, Michigan
Posts: 8,714
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Re: wire id please
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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