I was looking for realistic booster equalizer model 12-1953 the speakers wires diagram. Thanks

First, I'm not a Realistic representative.

*** Following is for information only.***
* Input will be 2 channel RCA jacks that connect to the radio OR they are the speaker wires from the amplified radio (1 to 20 watts)
* The outputs are probably 4 wire pairs for; Front-left, Frount-Right, Back-Left, Back -Right.
* I don't think there was a 5th speaker pair for sub-bass as it wasn't needed for the current music at the time. (You had to 'fake it' by adding a low frequency filter and a separate power amp to the sub.)
*I used to fake it by taking the Left-Right 'Hot' wires to a separate amp. This combined "mono" signal had both left and right merged together. But the sound was 'tinny' so you needed a bass boost amp.
* Looking at the pictures on eBay, looks like all the wires were dedicated plugs. May need to look for standard Auto audio plug layouts for stock cars as these units were to be dropped into a stock car with minimal modifications (to the car)
* Wire color standards; https://knowledge.sonicelectronix.com/car-audio-and-video/accessories-and-installation/wiring-harness-color-standards/
* After Market harness;https://www.youtube.com/watch?v=9MizxeSoor0
* Sorry, unable to find (free) manual download. Every site listed has been blocked or deleted. You may be able to check ebay for manual. But like most old electronics this falls into "Antiques"
* 1987 Ad (lower right); http://fultonhistory.com/Newspaper%2018/Salem%20NY%20Press/Salem%20NY%20Press%201988/Salem%20NY%20Press%201988%20-%200537.pdf
* 1988 Ad; page 60 item 18 floating ground adapter; page 57, https://www.americanradiohistory.com/Archive-Catalogs/Radio-Shack/Radio-Shack-1988.pdf
* This is a similar but current model; https://www.amazon.com/Massive-Audio-EQ-7X-Equalizer-Graphic/dp/B00852WCR4

Aloha, ukeboy57

* Additional information (but view at your own risk)
* The problem with "Registration sites" is your not sure if it's the right one or additional fee's required.
* Diagram (requires registration, with Fee?) ; http://www.gobbogames.co/realistic-equalizer-wiring-diagram.html
* Diagram (registration); http://www.falmouthproperty.co/wiring/realistic-equalizer-wiring-diagram.html
* Diagram(registration); http://www.crackthecode.co/realistic-car-radio-wiring-diagram.html

Recommend contacting a local car audio professional or Pyramid customer support directly here:

http://www.pyramidcaraudio.com/ContactUs.aspx

www.ask.com/mfg.name/make/model/instruction/manual
/wiring/diagram/
/setup/instructions/

All the wires on my 40watt realistic eq are all the same thickness and I have three red wires can someone tell me what side the power wire should be on and which color wires would go for speakers and which color go for the amplifier

the 5 thinner cables goes to positive lead of each speaker from the radio (input to amp) the red one to battery.You will not use the negative led for the speakers from the radio. The remaining coarse ones goes to the speakers (each pair same color to a speaker) and the red one feed radio positive led. Black is ground.

The main colors are:

Green - L+
White - L -
Brown - R+
Gray - R-

There are 3 sets of these. The ones with thinner wire are for high level input (from a stereo's speaker outputs). The two other thick sets are the speaker outputs to front and rear. They should've been attached to connectors labeled front and rear, if they aren't, you gotta find out through trial and error with the fader. Lastly, black is for ground of course, then the thin red wire is for 12V+ power (on with ignition), and the thicker red wire is power output to a deck, if you want it to turn on along with the amp/eq.

Click on MANUAL DOWNLOAD

LOOK PAGE 4 INTO THE PDF FILE!!!!

http://www.pyramidcaraudio.com/sku/903G/10-Band-Half-Din-Power-Booster-Graphic-Equalizer-Amplifier-200-Watts#

Hey there ninja. I was not able to find a manual in English(Spanish only!!!), but I did find this site with a few PDFs that may help you out. It has the Features, Installation, Operation, Specifications, and Wire Connections, so it should help you out.

it seems that you have got a bad equalizer
you should better replace it if possible