Highway 15 wiring kit problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sweet Willy · 09-21-2014, 03:28 PM

Neither my turn signals nor my horn are working. They were but now they're not. I checked every fuse. I replaced the relay. Nothing. Dead as a door nail. Anyone have any clues where else or what else to check?

OrrieG · 09-21-2014, 05:14 PM

What kind of column, stock or later GM type replacement?

Sweet Willy · 09-21-2014, 10:48 PM

Stock.

47 Fasttoys · 09-22-2014, 09:18 AM

Start with one circuit at a time, horn is the easiest. The horn relay works off of a ground supplied by the horn button. You should have 12 volts on the relay anytime the ignition switch is on. When you press the horn button you should hear the relay pull in as the ground is applied from the horn button. Check that first and re-post.
Rob

DransportGarage · 09-22-2014, 01:48 PM

American Auto Wire has pretty good tech support too. I'd give them a call if the problem persists.

OrrieG · 09-22-2014, 05:22 PM

Here is the stock turn signal wiring diagram (for a TF you did not say what yours is). It looks like the stock power comes from the accessory tab on the headlight switch to the flasher (stuffed up under the dash) then to the switch. If the new fuse box has the flasher built in to it there should be a wire from the flasher to the signal harness. I suspect that wire is missing or not connected right.

tmoble · 09-23-2014, 04:48 AM

so what was the issue with it?

Is Highway 15 part of AAW?

**mr48chev** · 09-23-2014, 04:58 PM

I went to their website and while the kits may seem a tad spendy they have extremely detailed instructions online for each section or circuit.

I've read what Bob said about their good tech support on other forums over the years.

Keep us posted on what you figured out and how you fixed it.

Sweet Willy · 09-23-2014, 11:21 PM

Kind of embarrassing but both problems led to faulty grounds. It was that ole paint devil that got me. Filed off some paint. Hooked it all back up. And what do ya know. Like I've said in the past: "Some days it doesn't even pay to chew your way out of the restraints."
Happy Motoring!

09-21-2014, 03:28 PM	#1
Sweet Willy Registered User Join Date: Aug 2014 Location: So. Pittsburg, TN Posts: 59	Highway 15 wiring kit problem Neither my turn signals nor my horn are working. They were but now they're not. I checked every fuse. I replaced the relay. Nothing. Dead as a door nail. Anyone have any clues where else or what else to check?

09-21-2014, 05:14 PM	#2
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Highway 15 wiring kit problem What kind of column, stock or later GM type replacement? __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project

09-21-2014, 10:48 PM	#3
Sweet Willy Registered User Join Date: Aug 2014 Location: So. Pittsburg, TN Posts: 59	Re: Highway 15 wiring kit problem Stock.

09-22-2014, 09:18 AM	#4
47 Fasttoys Registered User Join Date: Sep 2013 Location: Westminster, SC Posts: 933	Re: Highway 15 wiring kit problem Start with one circuit at a time, horn is the easiest. The horn relay works off of a ground supplied by the horn button. You should have 12 volts on the relay anytime the ignition switch is on. When you press the horn button you should hear the relay pull in as the ground is applied from the horn button. Check that first and re-post. Rob __________________ My '47 C.O.E build

09-22-2014, 01:48 PM	#5
DransportGarage Registered User Join Date: Feb 2010 Location: Lebanon, Ohio Posts: 1,359	Re: Highway 15 wiring kit problem American Auto Wire has pretty good tech support too. I'd give them a call if the problem persists. __________________ Bob "It won't take long and it won't cost much." '55 3100 (383/700R4)--'55 Belair Sedan (350/4-speed)--'64 'Vette Conv. (327/4-speed)--'68 GTO Conv. (462/4-speed)--'69 Cutlass Conv. (350/TH350)--'06 'Vette Conv. (LS2/6-speed) Bob's Retirement Build - My 55 TF Bob's 700R4 Build (how-to)

09-22-2014, 05:22 PM	#6
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Highway 15 wiring kit problem Here is the stock turn signal wiring diagram (for a TF you did not say what yours is). It looks like the stock power comes from the accessory tab on the headlight switch to the flasher (stuffed up under the dash) then to the switch. If the new fuse box has the flasher built in to it there should be a wire from the flasher to the signal harness. I suspect that wire is missing or not connected right. Attached Images __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project

09-23-2014, 04:48 AM	#7
tmoble Registered User Join Date: Feb 2009 Location: Glendale, Az Posts: 1,062	Re: Highway 15 wiring kit problem so what was the issue with it? Is Highway 15 part of AAW?

09-23-2014, 04:58 PM	#8
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,735	Re: Highway 15 wiring kit problem I went to their website and while the kits may seem a tad spendy they have extremely detailed instructions online for each section or circuit. I've read what Bob said about their good tech support on other forums over the years. Keep us posted on what you figured out and how you fixed it. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

09-23-2014, 11:21 PM	#9
Sweet Willy Registered User Join Date: Aug 2014 Location: So. Pittsburg, TN Posts: 59	Re: Highway 15 wiring kit problem Kind of embarrassing but both problems led to faulty grounds. It was that ole paint devil that got me. Filed off some paint. Hooked it all back up. And what do ya know. Like I've said in the past: "Some days it doesn't even pay to chew your way out of the restraints." Happy Motoring!



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