Now to convert to the 99 spec signal light, is it just a plug and play? Or will I have to change out the harness too?

 

Converting from 93-spec to 99-spec is NOT plug-n-play. You will need the following converter.

1993-1995 RX-7 Lighting and LED Kits

 

I have a set of the knightsport harness NIB if you need them

 

Thanks guys

 

If you buy replicas then it is plug and play

 

How can you tell they are replicas?

 

"The turn signal lenses are different so replacements must also be purchased. The OEM 1999 lenses are VERY expensive at more than $400 for the pair. Yikes! AND...they will not plug into the 1993-1995 wiring harness. An adapter harness has to be bought for about $80 (more expense) or you could splice in the wires yourself (more work). However, help is on the way. Makoto Auto Trends sells knockoff 1999 JDM style lenses for 1/2 the price of the factory lenses (Part number M-MZ99R7-6839BLX for the smoked version) AND the wiring plugs directly into the 1993-1995 harness - no adapter or wire splicing needed. The only difference in appearence is the OEM lights have a smooth inner housing whereas the knockoffs have an angular inner housing. From 5 feet you can't tell the difference and if you didn't know there was a difference one would swear they were OEM parts. And a nice option is the knockoffs are sold with a clear lens, a smoked lens, or clear lens with a clear housing (vs black). I chose the black housing with the smoked lens. "

From here:

Triple-R: Rotary Extreme 1999 OEM Style Front Bumper Install

A good gauge for replicas are price, vendor, and ebay. I have replicas on my car and I am perfectly happy with them.

 

Or you can do them yourself for a mere $50, heat gun, spray paint and painter's tape. IMO it's not worth buying OEM 99 spec tail lights when you can do them yourself.

 

^^
I believe the op was referring to the front turn signals and not the tailights.

 

Thanx for the info montego