^ Either that or if it has LED "bulbs", switch to conventional non-led bulbs to slow down the blink rate. If you were to take apart the actual blinker "relay" you can replace the capacitor inside to whatever you want to adjust the blink rate to whatever you want it to be. Its not hard, I've done that tons of times as a teenager.
a 2200mF capacitor is pretty much standard, the smaller the cap, the faster the blink rate. So a 1000mF cap will be very fast, but a 3300mF will slow it way the hell down. (etc etc). You can pick up whatever size of capacitor you need at Active Electronics on 32nd ave & 19th st NE.
All you have to do is unsolder the old one out, then solder the new one in.
You can also put three 1000mF caps together in parallel to create (essentially) a 3000mF cap if you want to fine tune it and so on from there.
Just make sure the capacitor voltage is 12volts or higher. Most are 5.5 volts which is standard electronic circuitry voltage. The cap will last all of 20seconds if you put 12 volts into one of those. Or just PM me, I can do it for you.
"The music business is a cruel and shallow money trench, a long plastic hallway where thieves and pimps run free, and good men die like dogs. There's also a negative side"