ok so i went from my stock 305 to a swapped 1980 350 so i got the engine in with most of the acc hooked up put my battery in and no power!!!
i went and got my battery tested and it reads 12.33v 741 cca out of 800 cca put new battery post on and i know i have power going thru wires but no power to the dash when i turn the key......im wondering if theres anything i may be forgetting or not checking?

 

How many wires do you have connected to the power terminal on the starter? Make sure to check all fuses as well.

 

1 wire going to alternator and the other is going to the starter the neg is going to the engine block and the frame i even install a 3rd ground to the frame but with thicker wire i checked fuses and none are blown

idk if i maybe disconnected something from the wire harness or not im pretty much stuck

 

So you only have ONE wire going to your starter, which is the main battery wire, correct?

If thats the case, than that is your problem. That power is hitting into the starter, but then stopping right there, and not getting through the firewall. There should be a (thick red?) wire that runs from the starter as well and goes into the C100 (The wiring bulkhead near the brake booster) and into the cab to power everything else up. Find that wire and connect it.

 

i was gonna say, thateres alot more then just 1 wire going to my starter

 

I have one big black wire and three red one to the other post on my start and one purple one by itself on the start so i have 5 wires on my starter...i have the same problem

 

well he ask me whats going to my POS on my battery
but there is 2 wires on one o ring and another wirer thats on a smaller o ring so a total of 4 wires if u include the pos wire to the battery only thing is i dont rememeber if out of the 3 wires if all three was on the starter or if only 1 of the 2 o rings was on the starter if you get what im saying i have my haynes in front of me and it really dont help

 

I agree. And just to save yourself from a head ache later on, make sure the chassis and engine block are grounded and bonded. If they are not bonded your gauges will work right and everything will be dim just to name a few.

 

 

dont pay attention to the green wire

 

Two of the red wires you are holding go to the same terminal on the starter as the positive wire from the battery. The other one I believe is the starter solenoid wire.

 

In other words ... ALL wires go to the starter larger terminal (which includes all the red fusible links, as well as the pos battery cable), EXCEPT for the purple wire, which runs all by itself to the smaller terminal on the starter.