need help with starter relay issue

[7down-7m]

i tried posting in this thread but it says the thread is to old to post in and did a search to find similar threads but nothing showed up taht would help me much so here i am again asking your help.

this is the original thread i was going off of
http://www.supramania.com/forums/showthread.php?p=1139914

and my problem is that we got it all wired up and when the wire from the starter relay component touches the positive battery terminal the engine starts to try and turn over all on its own no key in ignition just once it touches it try to start and i think maybe its an easy fix? (im no electrician lol dont know wiring) anyone else had this problem before or anyone that knows how to fix it plz shoot me a pm . . i feel sooooo close to driving her again i almost got it started up yesterday but then found a gas leak and spraying the starter fluid didnt help . . .had a small engine fire . .no damage done . just burnt away the leaking gas .got it put out really really fast . .scared the shit out of me. .but again if anyone knows how to fix this starter problem plz shoot me a pm . .i hope to have her up and running by this weekend . . thanks guys

 

[Nick M]

So you can't look at the electrical wiring diagram and see what it needs? If you can't, maybe you should pay somebody that does.

The big wired on the starter should always have power. The smaller one is the switched power.

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=038

You need the diagram for your year car. Although I doubt there is a change. Maybe in color of a wire or something.

As for your description, the wire from the relay touches the starter, it starts. That is supposed to happen. The problem is, from the diagram, which wire are you touching to the starter? Before the starter relay is the clutch start switch. After is the neutral safety switch, if you have an automatic.

You could have a ignition switch that is shorted. The car could be wired wrong. Do you have power on the two black wires at the relay at all times?

 

[7down-7m]

yes i can read it and my dad was helpin me with the wiring and power goes to it as soon as it touches the battery . ..but like i said . .when the wire that goes to the positive terminal touches the terminal it starts to crank over without me turning a key or anything and not sure how to go about making that stop

 

[jetjock]

The wiring for that mod (as dumb as it is) is stone simple. I suggest you go over it again paying particular attention to the configuration of the relay terminals. If you're using a typical Bosch style relay the numbers on it are explained here:

http://tinyurl.com/5hjxm

Btw making duplicate posts in different sections is frowned upon...

 

[Highnitro]

call me and i can explain.

 

[plaaya69]

You may have mixed up 87 with 87a.

http://www.teamrocs.com/technical/pages/relay_basics.htm

 

[7down-7m]

yes i know i thought that maybe i had posted in wrong section and couldnt find a delete thread option . . normally wouldnt doublepost and will check out that link and see if it helps me thx

 

[7down-7m]

matt i will give u a call tomorrow in case u need me to explain something to u. .cant see right now. .

and about tat diagram the relay i got was a 4prong so there is no 87a or 87b . . . do i have to have a 5prong?

 

[Nick M]

...from the diagram, which wire are you touching to the starter?

Do you have power on the two black wires at the relay at all times?

You don't need 5 wires. You should only have power to the relay when the clutch switch is closed, and the ignition switch is in the crank position. Again, do you have power all the time to the relay? :edit: you don't need 5 wires to run a 4 wire relay.


http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=038

If you are hooking up your main battery cable, and the car cranks, you are wired wrong, or mulitple short switches.

 

[jdub]

Btw making duplicate posts in different sections is frowned upon...

Highly frowned on...don't do this again.

Threads merged.

 

[alfonsera]

The wiring for that mod (as dumb as it is) is stone simple. I suggest you go over it again paying particular attention to the configuration of the relay terminals. If you're using a typical Bosch style relay the numbers on it are explained here:

http://tinyurl.com/5hjxm

Btw making duplicate posts in different sections is frowned upon...

So is the original relay the problem?

 

[jetjock]

You tell me. Maybe it's old wiring. Or maybe it's because these cars need bigger grounds. lol...