Ground Straps (How Many?)
 

I've been tinkering with the truck lately and have not found any ground straps, the ones by the filler necks were broken the only other is from the alternator bracket and headlights which is trashed.
So my question is how many ground straps are needed. Ordering a wiring harness from eBay and want everything to be there and done right.

'85 C10

As always thank you for your time and I look forward to hearing back from y'all.

Re: Ground Straps (How Many?)
 

I believe in lots of grounds..battery to engine...engine to frame... cab to frame...bed to frame..at a minimum

Re: Ground Straps (How Many?)
 

My 75 has one from the firewall to the passenger valve cover bolt and the primary battery cable runs to the alt bracket. Apparently fine for a new truck. But unless you are doing a frame off restore, best to assume that corrosion exists in a lot of the body to body bolt connections and add a few more grounds.
IIRC, headlights ground to the core support so a ground from battery to there
Taillights ground to the bed so as mentioned already, bed to frame.
They are a PITA to replace but check the grounds from fuel tank sender(s) to frame.
If your battery cable runs to an engine bracket, I would run a heavy ground from engine to frame.
There is a ground bus high up under the driver's side dash that often sports corrosion. Another PITA thing to get to.

Re: Ground Straps (How Many?)
 

x2 + battery to body

Re: Ground Straps (How Many?)
 

I was told by my engine builder that they see a lot of corrosion on aluminum heads from poor grounding issues (electrolysis). I did an LS swap on my C10 and put two large grounds from the block to the frame, two from the block to the cab, and two to from the cab to the frame.

I believe factory was just a small one from the back of the passenger head to the cab, and one from the rear bottom of the cab to the crossmember.

Re: Ground Straps (How Many?)
 

This is what I have ob mine and seems to eliminate any gremlins

Battery to frame
that frame spot to the engine block
that frame point to radiator support
Engine to firewall (I have a 6, when I had V8 I ran one from each head to firewall)
Body to Frame (2 - one on each side)
Bed to frame
Fuel sender to frame
Taillights to frame
I also have a grounding buss bar behind the glove box that I ran my stereo and a few other interior items to, then the bus bar to that battery frame tie point.

It maybe overkill, but it has always taken care of any weird issues I have had on this or past trucks

Re: Ground Straps (How Many?)
 

Im in the rust belt and have trouble keeping grounds simply on the truck. every time I replace one I use the Hobart insulated wire and their copper fittings with heat shrink that's been lasting till the truck melts into the asphalt.

Re: Ground Straps (How Many?)
 

The starter isn't mounted to the frame and purpose of the big battery cables is to run the starter.
I'd go battery to block, then frame. Otherwise I agree.

Re: Ground Straps (How Many?)
 

Agree. Battery has to go to the frame first. Like most grounds are good.
I run battery to block.
Block to frame.
Frame to core support.
Cab to block
Tail lights to bed.
Bed to frame
Make them nice clean grounds.