So I wired up a new stereo yesterday in my 88 gl , ran all new speaker wire straight to the harness, everything's hooked up works great ...... Until it starts raining , flick on the wipers and the stereo cuts out . Stereo cuts out if I use the blinkers too

 

I've never had this happen before, this is the 2nd stereo I've put in my car . Now the wiring is a little off, when I pulled the deck the car came with the yellow battery wire was connected to a blue wire with a yellow line and the red ignition wire was connected to a solid green one, everything else was all matched up with like color wires ..

 

So I did the same with my last stereo and it worked fine until the speakers & wire went to crap and threw some code on my stereo . So yesterday I bought a new jvc deck and two new front speakers, rears I bought with the last deck so they're still new . Wired everything up the same as it was when I originally bought the car, ran all new speaker wire to all 4 speakers .

 

Now I'm just confused to how the blinkers and wipers are cutting out the stereo when I've got everything hooked up as it was before ? I disconnected the yellow and the red from the green and blue wires and connected em to a solid red and a yellow with a white line, cause that's the one coming from the battery , now I've got nothing , unplug yellow with white line and connect it to a solid yellow so I've got two solid yellows together, turn over car still nothing ????

 

I'm dumbfounded at this point, I've never had such troubles with a simple wiring job on a stereo . I have everything clamped together , not the adapter piece to the cars original harness.

 

Here's a pic of the red and yellow wires , the green and blue ones in the middles are what they were originally connected to

You've got low voltage at the stereo.

 

Likely an ALT issue. Maybe not the Alt itself, but the wiring.

 

Check the condition of the big white wire to the fusible link box. Also check the ring that connects that wire to the ALT.

 

 

Battery terminal connections and cable connections to engine and body grounds are another suspect. Make sure they are all clean and tight.

 

 

 

Scratch that perhaps.

 

I checked the manual, you got colors wrong.

 

Green is Battery power, and Blue/yellow stripe wire is the IG. Switched power.

 

The Yellow/white wire you connected to should actually be the Rear/Left + signal to the speaker.

 

Red wire is + wire of the stereo backlight dimmer system.

 

Make corrections before you blow your new speakers and deck.

Edited October 19, 201213 yr by Gloyale

I reconnected the IG wire to the yellow blue and the red to the green , still same

Results but I will look into the Alt wiring now . Thanks gloyale !

Found the culprit, I was missing the female connector on the positive wire to the alternator so it was just running off the negative at like 10 v . Got a new connector clamped it down and plugged it back in . Good to go !

Found the culprit, I was missing the female connector on the positive wire to the alternator so it was just running off the negative at like 10 v . Got a new connector clamped it down and plugged it back in . Good to go !

 

Glad you fixed it.

 

Although, I'd like to point out that your understanding of the ALT cicuit is a little sketchy.

 

There is not a positive and negative terminal.

 

There is a Charge wire, a Signal wire(stator) and a "charge light" wire(Field)

 

I'd suggest reading up on ALT theory to get a better understanding.

Yeah, electrical is my weakest area with cars . I'm young and still got a lot to learn lol I appreciate you giving me the info on that though .