Lost Electrical Power to Truck - what do I check - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**wesmigletz** · 08-16-2013, 12:38 AM

When I started my 67 truck tonight it fired right-up, then died. I have no headlights or IG. The battery has 12.7 volts and there is a junction block near the battery. I have 12.7 volts on it as well.

Is there a fusible link or a hot connection I can check?

Thanks in advance,

Wes

**wesmigletz** · 08-16-2013, 10:43 AM

Where does the main power feed go? I'm just trying to get an idea where I can check.

STOCKISH · 08-16-2013, 10:46 AM

First thing, take the terminals off and clean them. Best place to start. Then make sure your ground cable has a good clean connection to the chassis and the body. From there trace the positive cable down to the starter and make sure power is there. There should be a fusible link or two on the solenoid at the starter. Check those and let us know what you find.

C20-67_N_MO · 08-16-2013, 12:32 PM

Super is correct.

Start there and work your way slowly following the path of the electrical wires. Pay attention to each wire and its condition as you trace it to a termination point.

BLACKLINE61 · 08-16-2013, 01:04 PM

Exact same scenario happened to me last week and Super is 100% correct on checking the battery terminals first, the neg looked clean but wasn't making contact other than a few pinpoints

**wesmigletz** · 08-16-2013, 01:41 PM

Thanks for the feedback. Both cables are pretty ratty. I'll replace them and trace the wires to the starter and see how they look.

**wesmigletz** · 08-16-2013, 08:37 PM

I got the engine cranking over and firing. I do not have headlights, turn signals or horn. I have 12.7 volts at the regulator on the D side core support.

Fuses looked good when I checked them.

Any ideas?

**wesmigletz** · 08-17-2013, 05:31 PM

I traced a hot wire into the cab. It had 12.6 volts at the horn relay. I also have 12.6 volts at a red wire in the head light switch.

So, I replaced the horn relay and headlight switch with parts from my other truck, but still do not have head lights, turn signals, or wipers or tail lights.

**wesmigletz** · 08-17-2013, 08:39 PM

Fixed it. Re-checked and cleaned the grounds. There was a lot of corrosion. Everything works now.

C20-67_N_MO · 08-18-2013, 05:18 AM

Quote:

Originally Posted by wesmigletz

Fixed it. Re-checked and cleaned the grounds. There was a lot of corrosion. Everything works now.

Congrats!

**wesmigletz** · 08-18-2013, 05:18 PM

Quote:

Originally Posted by C20-67_N_MO

Congrats!

I was over thinking it. It really was the basics.

08-16-2013, 12:38 AM	#1
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Lost Electrical Power to Truck - what do I check When I started my 67 truck tonight it fired right-up, then died. I have no headlights or IG. The battery has 12.7 volts and there is a junction block near the battery. I have 12.7 volts on it as well. Is there a fusible link or a hot connection I can check? Thanks in advance, Wes __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

08-16-2013, 10:43 AM	#2
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Lost Electrical Power to Truck - what do I check Where does the main power feed go? I'm just trying to get an idea where I can check. __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

08-16-2013, 10:46 AM	#3
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: Lost Electrical Power to Truck - what do I check First thing, take the terminals off and clean them. Best place to start. Then make sure your ground cable has a good clean connection to the chassis and the body. From there trace the positive cable down to the starter and make sure power is there. There should be a fusible link or two on the solenoid at the starter. Check those and let us know what you find. __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

08-16-2013, 12:32 PM	#4
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Lost Electrical Power to Truck - what do I check Super is correct. Start there and work your way slowly following the path of the electrical wires. Pay attention to each wire and its condition as you trace it to a termination point. __________________ Coming Soon: Project 1970 Country Truck

08-16-2013, 01:04 PM	#5
BLACKLINE61 Registered User Join Date: Feb 2013 Location: a****er ca Posts: 43	Re: Lost Electrical Power to Truck - what do I check Exact same scenario happened to me last week and Super is 100% correct on checking the battery terminals first, the neg looked clean but wasn't making contact other than a few pinpoints

08-16-2013, 01:41 PM	#6
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Lost Electrical Power to Truck - what do I check Thanks for the feedback. Both cables are pretty ratty. I'll replace them and trace the wires to the starter and see how they look. __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

08-16-2013, 08:37 PM	#7
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Lost Electrical Power to Truck - what do I check I got the engine cranking over and firing. I do not have headlights, turn signals or horn. I have 12.7 volts at the regulator on the D side core support. Fuses looked good when I checked them. Any ideas? __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

08-17-2013, 05:31 PM	#8
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Lost Electrical Power to Truck - what do I check I traced a hot wire into the cab. It had 12.6 volts at the horn relay. I also have 12.6 volts at a red wire in the head light switch. So, I replaced the horn relay and headlight switch with parts from my other truck, but still do not have head lights, turn signals, or wipers or tail lights. __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz

08-17-2013, 08:39 PM	#9
wesmigletz Senior Member Join Date: Feb 2009 Location: Parker, Texas Posts: 685	Re: Lost Electrical Power to Truck - what do I check Fixed it. Re-checked and cleaned the grounds. There was a lot of corrosion. Everything works now. __________________ 1970 2WD K5 1968 Camaro Conv 1967 Chevy SWB 1964 Malibu SS 1957 Corvette Pics www.picturetrail.com/wesmigletz



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