Please help ....402 engine harness routing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

52napco · 10-30-2017, 09:15 PM

I searched for an hour to no avail....I believe the temp sender goes on the driver side but curious where the mounting tabs go for the temp sender wire..thanks

**70STOVEBOLT** · 10-30-2017, 10:14 PM

You are correct it routes from the firewall gutter to the intake side of the LH valve cover around the front and connects to rear he sender. Here is a pic of mine, the stock valve cover has tabs welded on. If you zoom in you can see the 20 gauge dark green wire.

52napco · 10-31-2017, 05:53 AM

My new harness has metal tabs and was curious where they go also and I see yours doesn't have the tabs ?

**70STOVEBOLT** · 10-31-2017, 10:33 AM

My harness is OEM and the valve cover has the tabs to hold the temp sender wire in place. If you have an aftermarket harness, the tabs will have to be welded on or bolted on a valve cover bolt if they have the provision for that.

10-30-2017, 09:15 PM	#1
52napco Registered User Join Date: Jun 2014 Location: upstate sc Posts: 2,095	Please help ....402 engine harness routing I searched for an hour to no avail....I believe the temp sender goes on the driver side but curious where the mounting tabs go for the temp sender wire..thanks

10-30-2017, 10:14 PM	#2
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,424	Re: Please help ....402 engine harness routing You are correct it routes from the firewall gutter to the intake side of the LH valve cover around the front and connects to rear he sender. Here is a pic of mine, the stock valve cover has tabs welded on. If you zoom in you can see the 20 gauge dark green wire. Attached Images __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

10-31-2017, 05:53 AM	#3
52napco Registered User Join Date: Jun 2014 Location: upstate sc Posts: 2,095	Re: Please help ....402 engine harness routing My new harness has metal tabs and was curious where they go also and I see yours doesn't have the tabs ?

10-31-2017, 10:33 AM	#4
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,424	Re: Please help ....402 engine harness routing My harness is OEM and the valve cover has the tabs to hold the temp sender wire in place. If you have an aftermarket harness, the tabs will have to be welded on or bolted on a valve cover bolt if they have the provision for that. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear



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