The rear turn signals use a standard automotive #1073 bulb, they can be had at any auto parts store and many supermarkets and convienicnce stores, especially those next to the highway.

The brake/running lights and the front turn signals use a standard automotive #1157 or #1034 bulbs respectively. The only difference between the two is the running light brightness (2 vs 3 candlepower). I was able to tell the difference when I looked carefully, but it proabably doesn't matter. If you have the choice, get the 1034's, they're the brigher of the two, and more light is safer.

They can be had at any auto parts store and many supermarkets and convienicnce stores, especially those near the highway.

The speedometer light is a standard automotive #194 bulb. It can be had from any auto parts store and many supermarkets and some convienicnce stores, especially if said store is near a highway.

Note that this is the only bulb in the instrument cluster that can be had that easily. The rest can only be had from a Honda dealer.

As of this writing, this bulb can't be found at an auto parts store or on the net. You have to get it from a Honda dealer. Bleh.

The Honda part number and description is:
Bulb, wedge base, 12v/3w, 34908-KM1-671

It looks like a #74, or a 17037 (2721), but don't be fooled, it's not. those bulbs are a little bit too small, and they'll rattle around. they're also a lower wattage, so they won't be as bright, which is a problem if it's the oil pressure light that you don't notice turning on.

As of this writing, this bulb can't be found at an auto parts store or on the net. You have to get it from a Honda dealer. Bleh.

The Honda part number and description is:

year desc. part number
'88, '89 bulb, wedge base, 12V/1.7W 34908-MG9-951
'90, '91 bulb, wedge base, 12V/1.4W 34908-MN8-700
I can't see a reason why it would matter which one you use, but there's the data.

year	desc.	part number
'88, '89	bulb, wedge base, 12V/1.7W	34908-MG9-951
'90, '91	bulb, wedge base, 12V/1.4W	34908-MN8-700

At last checking, they cost about $2 from places on the net.

As of this writing, this bulb can't be found at an auto parts store or on the net. You have to get it from a Honda dealer. Bleh.

The Honda part number and description is:

year desc. part number
'88, '89 bulb, wedge base, 12V/1.7W 34908-MG9-951
'90 bulb, wedge base, 12V/1.4W 34908-MN8-700
'91 Bulb, wedge base, 12v/3w 34908-KM1-671
I can't see a reason why it would matter which one you use, but there's the data.

year	desc.	part number
'88, '89	bulb, wedge base, 12V/1.7W	34908-MG9-951
'90	bulb, wedge base, 12V/1.4W	34908-MN8-700
'91	Bulb, wedge base, 12v/3w	34908-KM1-671

At last checking, they cost about $2 from places on the net.

The headlight bulb is a standard H4 bulb, and not a weirdo not-quite-standard H4 bulb the way many Hondas have. An H4 is also called an 9003, or HB2.

The standard stock wattage is a halogen 60/55 watt bulb, but many people have had success with 80 and 100 watt bulbs without melting the high-beam switch or any of the wiring. Be careful, however, as you might not be so lucky, there's some variation in the manufacture of switches and wires.

If you want to run a high wattage bulb, it's a good idea to run a new larger fused wire from the battery to the headlight bucket and use a relay switched off the current headlight wire. It will keep the current from running through the switch and you won't loose as much voltage from the stock wiring which is kind of thin for the high wattage bulbs.

If you just want to buy a ready made headlight relay harness, buy this one, it helps pay for this site!