be sure to wire this device directly to the battery! - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #1 of 7 (permalink) Old May 27th, 20, 2:11 PM Thread Starter
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Randy
 
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be sure to wire this device directly to the battery!

Just about everything I add to my Chevelle wants a direct line to the 12v post on the battery. Stereo, EFI, cruise, you name it, it wants a dedicated circuit. I know that good clean power to these accessories is important, and I want to make sure they have the power to do what they are supposed to do. But I don't want 17 wires hanging off my battery post. A friend mentioned using a Ford fender relay as a power post. Some guys have run accessories off the horn relay. What have some of you all done to make a clean access to battery power in the engine compartment?
thanks,
Rat

1970 Chevelle Malibu. Red. Did it come in another color?
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post #2 of 7 (permalink) Old May 27th, 20, 2:25 PM
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Bill
 
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Re: be sure to wire this device directly to the battery!

I know what you mean. It gets ugly very quickly. I found these while searching 'on the line'. They are kind of like what new cars use.

https://www.littelfuse.com/products/...case-bmzf.aspx

https://www.projecta.com.au/battery-...ution-terminal
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1969 Sport Coupe SS Tribute Cortez Silver 454 400TH
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post #3 of 7 (permalink) Old May 27th, 20, 3:17 PM
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Ken
 
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Re: be sure to wire this device directly to the battery!

Add one of these xtra fuse panels. It connects to the battery and gives you 8 additional fuses and wires and has 2 relays.

https://www.summitracing.com/parts/prf-70217?rrec=true
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post #4 of 7 (permalink) Old May 27th, 20, 3:26 PM
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Bill
 
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Re: be sure to wire this device directly to the battery!

Quote:
Originally Posted by ken70ss396 View Post
Add one of these xtra fuse panels. It connects to the battery and gives you 8 additional fuses and wires and has 2 relays.

https://www.summitracing.com/parts/prf-70217?rrec=true
I have used those a lot. They work great under the dash for adding circuits but I think he wanted higher current connections.
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1969 Sport Coupe SS Tribute Cortez Silver 454 400TH
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post #5 of 7 (permalink) Old May 27th, 20, 6:07 PM
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Eric
 
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Re: be sure to wire this device directly to the battery!

I prefer to setup a separate power distribution panel that's connected to the battery and not run a bunch of wires directly to the battery cable lugs. You can buy them as fused or terminal strip type units.
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post #6 of 7 (permalink) Old May 27th, 20, 8:43 PM
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Bruce
 
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Re: be sure to wire this device directly to the battery!

My '69 has a junction block "behind" the battery (attached to the firewall). Any electrical that "needs" to be directly attached to the battery gets hooked into the electrical system at that junction block. There's a secondary power feed that comes off the positive battery cable, follow that feed wire to the junction block.
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post #7 of 7 (permalink) Old May 27th, 20, 9:18 PM
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Frank
 
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Re: be sure to wire this device directly to the battery!

On my ride, on the driver's side I tapped off the horn relay for three relay-triggered circuits (headlight low, headlight high, ignition) each protected with a self-resetting circuit breaker. On the passenger side, other always-on circuits tap off the junction block behind the battery, as described by Bruce in the previous post.
With the factory wiring setup, the alternator provides power directly to the horn relay and battery junction terminal through 10 gauge wire. This was adequate for a 62 amp generator. I would recommend upgrading the alternator feed wire and battery-to-horn-relay wire if much more current is drawn from the added terminals.

-Frank
1970 Chevelle Malibu purchased new in 1970
355 SBC, XE262H cam, Performer RPM heads, MSD HEI, TH200-4R trans, 3.55:1 Posi, digital gauges, QA1 coilovers
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