Electrical help!

[silverbullet]

i just finished puttin headers, new intake, mini starter and eliminating emissions stuff. I went to hook up battery and got a big spark. I re-checked all the starter connections and they are clean and tight. I checked all of the other electrical conections on the engine and they appear fine. I have the red wires with the fuseable links in them connected to the battery terminal on the starter and the small connection pink wire connected to the small ignition terminal on the starter. i have the black 16 gauge wire mounted to the starter bolts and the other black wire that comes off the temperature coolant sensor to the engine block.
What am I missing? Please advice?????

 

[Bob Chadwick]

Silver,

What's the problem. No power, car won't turn over, won't start, etc.

Bob

 

[silverbullet]

thanks for responding! As i mentioned, when hooking up the battery there is a very large spark. It appears there is a short or something is hooked up wrong. Can't fiqure out what it is. Any insight?

 

[LVMYVT76]

Try disconnecting the starter wiring, then see if there is a spark, if so, then it's something else. Got a wiring diagram for your car?

 

[silverbullet]

I disconnected all starter wires and there was no spark at the battery. I took the mini starter to have it bench tested and it is good. i have tried hooking up one wire at a time to see if i get a spark. With any wire including the ground it sparks. Any ideas.

 

[petes74ttop]

Starter Wiring.

On my 74 this is how it's wired with the stock starter:
Top-large Pos from battery and 12 guage red (with fuseable link) depending on your year- goes to junction box and/or horn relay and alternator, powers interior lights with switch off.

Small "S" terminal (closest to the block) = 12 guage purple. Comes from ignition switch to activate starter solenoid when switch is turned to "Start".

Small "R" terminal (outboard side) =yellow to coil (+) for full battery voltage to coil while cranking.

Does this help? PG.

 

[Peer81]

What you could do is the following.

As you connected the plus cable to the battery terminal you got a spark so something somewhere in your vette is already taking 12v. I think this was without the key in the steeringcolomn?

What you can do.. Take a amps reader and place it between your battery terminal and the plus cable. Now you can see how many amps are draining. Next thing to do is one by one disconnect all the things you connected and check in between if the amps are still flowing or not. When the amps stopped flowing you just found your problem. Hope it helps,

Groeten Peter

 

[petes74ttop]

Lets find that short!

Hi silverbullet, Peer81 gave you good advise but here's another way to find shorts with just a volt meter, With the pos battery cable disconnected, connect the volt meter between the starter lug and the pos battery cable than pull one fuse at a time untill you get "0" volts, when you get "0" volts that is the circut that has the problem. Than find the problem in that circut. PG.